{"title":"主页","description":null,"products":[{"product_id":"m-2-to-u-2-nvme-ssd-adapter-sff-8639-75cm","title":"DiLinKer PCIe 4.0 U.2 NVMe SSD (SFF-8639) to M.2 Host Adapter, with SATA Power Cable, 75cm","description":"\u003cp\u003eA \u003cstrong\u003eU.2 (SFF-8639)\u003c\/strong\u003e drive on a motherboard that only has an \u003cstrong\u003eM.2\u003c\/strong\u003e slot free. This is the PCIe 4.0 version: the same card-and-cable arrangement, rated for Gen4 signalling and with 75 cm of cable instead of 50.\u003c\/p\u003e\n\u003ch2\u003eWhat the 4.0 rating buys you\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGen4-rated, for Gen4 drives.\u003c\/strong\u003e A Gen4 U.2 drive can sustain close to 7 GB\/s. Through a Gen4 slot and a Gen4-rated assembly it will; through a marginal Gen3-era adapter it may not train at Gen4 at all and will quietly fall back. This assembly is built for the higher signalling rate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirection: U.2 drive, M.2 host.\u003c\/strong\u003e The card sits in the M.2 slot, the 68-pin end goes to a 2.5″ U.2 SSD. It does not turn an M.2 SSD into a U.2 module — if that is what you need, it is the opposite adapter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12 V from the PSU, always.\u003c\/strong\u003e An M.2 slot gives you 3.3 V. A 2.5″ U.2 drive needs 12 V as well, so the SATA power lead in the box is part of the install, not an accessory.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e75 cm so the drive can live in a bay.\u003c\/strong\u003e The extra 25 cm over the 50 cm version is what lets the drive sit in a proper 2.5″ cage while the card stays on the board — front-mounted cages in a full tower, or a drive sled on the far side of a long GPU.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIt is not a PCIe slot card.\u003c\/strong\u003e This installs in an M.2 socket, not in a PCIe slot. If your slots are free and the M.2 is the scarce resource, a PCIe x4 to U.2 cable is the cheaper answer: it uses a slot, leaves the M.2 free and needs no adapter card at all.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #e3e6ea;padding:7px 10px;background:#f7f8fa;width:34%\"\u003e\u003cstrong\u003eHost side\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #e3e6ea;padding:7px 10px\"\u003eM.2 M-key (PCIe x4)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #e3e6ea;padding:7px 10px;background:#f7f8fa;width:34%\"\u003e\u003cstrong\u003eDrive side\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #e3e6ea;padding:7px 10px\"\u003eU.2 \/ SFF-8639, 68-pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #e3e6ea;padding:7px 10px;background:#f7f8fa;width:34%\"\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #e3e6ea;padding:7px 10px\"\u003eSATA 15-pin lead to the PSU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #e3e6ea;padding:7px 10px;background:#f7f8fa;width:34%\"\u003e\u003cstrong\u003eCable length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #e3e6ea;padding:7px 10px\"\u003e75 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #e3e6ea;padding:7px 10px;background:#f7f8fa;width:34%\"\u003e\u003cstrong\u003eSignal\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #e3e6ea;padding:7px 10px\"\u003ePCIe 4.0 x4 rated (~7.9 GB\/s ceiling)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #e3e6ea;padding:7px 10px;background:#f7f8fa;width:34%\"\u003e\u003cstrong\u003eProtocol\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #e3e6ea;padding:7px 10px\"\u003eNVMe over PCIe only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #e3e6ea;padding:7px 10px;background:#f7f8fa;width:34%\"\u003e\u003cstrong\u003ePart number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #e3e6ea;padding:7px 10px\"\u003eRPC75-0056\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #e3e6ea;padding:7px 10px;background:#f7f8fa;width:34%\"\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #e3e6ea;padding:7px 10px\"\u003eB0CKT12PS3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWorks with\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eM.2 M-key slots carrying PCIe lanes, Gen3 or Gen4\u003c\/li\u003e\n\u003cli\u003e2.5″ U.2 NVMe SSDs, including Gen4 models\u003c\/li\u003e\n\u003cli\u003eTower and rack builds with a free SATA power connector\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDoes not work with\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSATA-only M.2 slots (B-key)\u003c\/li\u003e\n\u003cli\u003eTurning an M.2 SSD into a U.2 drive — wrong direction\u003c\/li\u003e\n\u003cli\u003eSAS or SATA 2.5″ drives\u003c\/li\u003e\n\u003cli\u003eU.3 drives without checking the pin assignment first\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTypical deployments\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGen4 U.2 drive in a Gen4 desktop board.\u003c\/strong\u003e The slot has the lanes, the drive has the speed; the adapter is the only thing missing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull-tower builds with front cages.\u003c\/strong\u003e 75 cm reaches a front 2.5″ cage from a board-mounted M.2 slot without strain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest benches.\u003c\/strong\u003e Move a U.2 drive between machines through the M.2 slot, which is usually the only free host interface on a modern board.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003ch3\u003eDoes it need a SATA power connection?\u003c\/h3\u003e\n\u003cp\u003eYes. Without 12 V the drive will not come up. The lead is included.\u003c\/p\u003e\n\u003ch3\u003eDo I get Gen4 speeds?\u003c\/h3\u003e\n\u003cp\u003eOnly if the slot, the drive and the CPU\/chipset path are all Gen4. Any Gen3 link in the chain pulls the whole connection down to Gen3.\u003c\/p\u003e\n\u003ch3\u003eHow is this different from the 50cm version?\u003c\/h3\u003e\n\u003cp\u003eTwo things: 25 cm more cable, and a Gen4 signal rating. If your drive is Gen3 and the bay is close, the 50 cm version is cheaper.\u003c\/p\u003e\n\u003ch3\u003eCan I boot from it?\u003c\/h3\u003e\n\u003cp\u003eDepends on the board firmware, not on the adapter. Most current boards boot from NVMe on an M.2 slot; check yours if the machine is older.\u003c\/p\u003e\n\u003ch3\u003eWill a U.3 drive work?\u003c\/h3\u003e\n\u003cp\u003eDo not assume it. U.3 and U.2 share the 68-pin shell but not the pin assignment. Tell us the drive model and we will confirm before you order.\u003c\/p\u003e\n\u003ch3\u003eIs the card itself passive?\u003c\/h3\u003e\n\u003cp\u003eYes — no re-driver, no switch, nothing to configure. It carries the lanes straight through, which is also why it adds no measurable latency.\u003c\/p\u003e\n\u003ch2\u003eIn the box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 × PCIe 4.0 U.2 (SFF-8639) to M.2 host adapter card\u003c\/li\u003e\n\u003cli\u003e1 × 75 cm cable\u003c\/li\u003e\n\u003cli\u003e1 × SATA power lead\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEvery cable is continuity- and pinout-tested before it ships and carries a 24-month warranty. If a link does not train, send us the controller model and the backplane part number before returning anything — in most cases the cable is the wrong variant for the port, not faulty, and we would rather tell you that up front.\u003c\/p\u003e\n\u003ch2\u003eRelated\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/dilinker-m-2-to-u-2-nvme-ssd-sff-8639-drive-to-m-2-host-adapter-u-2-ssd-converter-with-power-cable50cm\"\u003eSame adapter, 50cm, lower price\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/diliving-slimsas-4x-to-u-2-nvme-adapter-sff-8654-38p-to-sff-8639-68p-cable-with-power-75cm\"\u003eSlimSAS x4 to U.2 cable, 75cm\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/u-2-nvmesff-8639\"\u003eAll U.2 NVMe cables and adapters\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DiLinKer","offers":[{"title":"Default Title","offer_id":47981323747624,"sku":"B0CKT12PS3","price":33.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0866\/1460\/6120\/files\/1111_64a3ce5e-0d44-4035-ba12-0862f2553273.jpg?v=1712909690"},{"product_id":"mcio-x4-to-u-2-nvme-adapter-sff-ta-1016-sff-8639-70cm","title":"DiLinKer PCIe 5.0 MCIO x4 to U.2 NVMe Adapter, SFF-TA-1016 to SFF-8639 Cable with Power, Cable 70cm","description":"\u003cp\u003eAttach a U.2 (SFF-8639) NVMe drive directly to an MCIO header. This PCIe 5.0 assembly starts with an MCIO 4x connector (SFF-TA-1016, 38-pin) and ends in a U.2 drive interface, with a power branch built into the cable so one part does the whole job. It is the shortest path from a Gen5 board’s MCIO x4 headers to 2.5-inch U.2 NVMe SSDs — no adapter card, no backplane.\u003c\/p\u003e\n\u003ch2\u003eWhy this cable\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePCIe 5.0 rated.\u003c\/strong\u003e A full x4 link at 32 GT\/s per lane — about 15.75 GB\/s to a Gen5 U.2 SSD.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect drive attach.\u003c\/strong\u003e Reaches the U.2 drive itself; no backplane or adapter card in between.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower built into the assembly.\u003c\/strong\u003e The cable carries the drive power branch, so you do not need a separate U.2 power adapter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e70 cm of reach.\u003c\/strong\u003e Comfortable routing from board headers to a 2.5-inch drive bay.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePassive assembly.\u003c\/strong\u003e No firmware, no driver, nothing to configure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;font-size:14px;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;background:#fafafa;width:38%;\"\u003e\u003cstrong\u003eHost connector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003eMCIO 4x, SFF-TA-1016, 38-pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;background:#fafafa;width:38%;\"\u003e\u003cstrong\u003eDevice interface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003eU.2 NVMe, SFF-8639\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;background:#fafafa;width:38%;\"\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003eIntegrated power branch for the drive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;background:#fafafa;width:38%;\"\u003e\u003cstrong\u003eLane configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003e4 lanes, 1:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;background:#fafafa;width:38%;\"\u003e\u003cstrong\u003eInterface speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003ePCIe 5.0, up to 32 GT\/s per lane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;background:#fafafa;width:38%;\"\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003e70 cm \/ 27.6 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;background:#fafafa;width:38%;\"\u003e\u003cstrong\u003eSKU \/ identifier\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003eSR-0549-AX1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;background:#fafafa;width:38%;\"\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003e24 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWorks with\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBoards with MCIO 4x (SFF-TA-1016) 38-pin headers carrying PCIe.\u003c\/li\u003e\n\u003cli\u003e2.5-inch U.2 (SFF-8639) NVMe SSDs, Gen4 and Gen5.\u003c\/li\u003e\n\u003cli\u003eServer and workstation chassis with standard drive power (SATA-style or MOLEX via the branch).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDoes not work with\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eU.2 drives behind a backplane — for that, run an MCIO cable to the backplane port instead.\u003c\/li\u003e\n\u003cli\u003eM.2 slots — this is a U.2 (2.5-inch) assembly.\u003c\/li\u003e\n\u003cli\u003eSAS\/SATA U.2 drives behind SAS hosts — NVMe requires a PCIe-capable host port.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTypical deployments\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGen5 board to U.2 SSD.\u003c\/strong\u003e The direct MCIO-to-drive run on current platforms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFront bay NVMe.\u003c\/strong\u003e Feed a 2.5-inch bay from an MCIO header without a backplane.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLab benches.\u003c\/strong\u003e Quick U.2 device attach for testing Gen5 SSDs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003ch3\u003eDo I still need a separate power cable for the drive?\u003c\/h3\u003e\n\u003cp\u003eNo. The assembly includes the power branch, so the drive’s power comes along with the data cable from a standard internal power source.\u003c\/p\u003e\n\u003ch3\u003eWill it run a Gen4 U.2 SSD?\u003c\/h3\u003e\n\u003cp\u003eYes. The link negotiates to the device speed, so Gen4 and Gen3 drives run at their rated rates.\u003c\/p\u003e\n\u003ch3\u003eMCIO x4 or x8 — which do I have?\u003c\/h3\u003e\n\u003cp\u003eThe 38-pin plug is x4, the 74-pin plug is x8. This cable is x4; if your header is the 74-pin type, use the MCIO x8 to 2×U.2 NVMe cable instead.\u003c\/p\u003e\n\u003ch3\u003eDoes the drive need to be NVMe?\u003c\/h3\u003e\n\u003cp\u003eFor PCIe hosts, yes — U.2 SAS drives will not enumerate on a PCIe port. The cable itself is passive and carries whatever the host and drive agree on.\u003c\/p\u003e\n\u003ch2\u003eIn the box\u003c\/h2\u003e\n\u003cul\u003e\u003cli\u003e1 × MCIO x4 to U.2 NVMe adapter cable with power, 70 cm (SKU SR-0549-AX1)\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003eBacked by a 24-month warranty. If a link trains at reduced width or does not appear, contact us with your controller and device models and we will help you isolate the cause.\u003c\/p\u003e\n\u003ch2\u003eRelated\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/diliving.com\/collections\/mini-cooledge-iomcio\"\u003eAll MCIO (Mini Cooledge IO) cables\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/diliving.com\/collections\/u-2-nvmesff-8639\"\u003eAll U.2 NVMe (SFF-8639) cables\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/diliving.com\/products\/mcio-x8-to-2x-u-2-nvme-adapter-sff-ta-1016-gen5-80cm\"\u003eMCIO x8 to 2× U.2 NVMe Adapter, PCIe Gen5, 80 cm\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DiLinKer","offers":[{"title":"Default Title","offer_id":50853338415400,"sku":"SR-0549-AX1","price":36.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0866\/1460\/6120\/files\/4.jpg?v=1761114105"},{"product_id":"mcio-x8-to-2x-minisas-hd-sff-ta-1016-sff-8643-gen4-80cm","title":"DiLinKer MCIO x8 to 2*MiniSAS-HD x4, SFF-TA-1016 74Pin to 2*SFF-8643 36Pin, PCIe Gen4 Mini Cooledge IO Cable, 80cm","description":"\u003cp\u003e\u003cstrong\u003eKeep your MiniSAS HD backplane, move to a Gen4 MCIO board.\u003c\/strong\u003e The DiLinKer RMC74-8690-AX1 converts one MCIO 8x host connector (SFF-TA-1016, 74-pin) into two MiniSAS HD x4 ports (SFF-8643, 36-pin), 80 cm long. It is the cable you need when the motherboard is new — a PCIe 4.0 server or workstation platform with MCIO headers — but the chassis, drive cage or U.2 adapter you already own terminates in SFF-8643. Instead of replacing the backplane, you change one cable.\u003c\/p\u003e\n\n\u003ch2\u003eWhy this cable\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMCIO host, SFF-8643 device.\u003c\/strong\u003e Splits 8 host lanes into two independent x4 links, each on a standard 36-pin MiniSAS HD plug.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePCIe 4.0, 16 GT\/s per lane.\u003c\/strong\u003e Around 7.88 GB\/s per port — the full bandwidth of a Gen4 x4 NVMe drive, with no switch chip in the path.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProtects existing hardware.\u003c\/strong\u003e Reuse SFF-8643 backplanes, drive cages and U.2 adapters you have already bought and qualified.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwo links, not one.\u003c\/strong\u003e Both SFF-8643 outputs carry four lanes each, so two devices run at full x4 width simultaneously.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e80 cm for cable management.\u003c\/strong\u003e Enough length to route behind the riser and reach a rear cage without pulling the connector sideways.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePassive assembly.\u003c\/strong\u003e No retimer, no power, no configuration in BIOS or the OS.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;font-size:14px;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;background:#fafafa;width:38%;\"\u003e\u003cstrong\u003eHost connector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003eMCIO 8x, SFF-TA-1016, 74-pin\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;background:#fafafa;\"\u003e\u003cstrong\u003eDevice connectors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003e2 × MiniSAS HD, SFF-8643, 36-pin\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;background:#fafafa;\"\u003e\u003cstrong\u003eLane configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003e8 host lanes → 2 × 4 device lanes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;background:#fafafa;\"\u003e\u003cstrong\u003ePCIe generation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003ePCIe 4.0 (16 GT\/s per lane); backward compatible with 3.0\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;background:#fafafa;\"\u003e\u003cstrong\u003eBandwidth per port\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003e64 GT\/s (about 7.88 GB\/s at Gen4 x4)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;background:#fafafa;\"\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003e80 cm \/ 31.5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;background:#fafafa;\"\u003e\u003cstrong\u003eProtocol\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003eNVMe over PCIe only — the MCIO host port carries no SAS or SATA\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;background:#fafafa;\"\u003e\u003cstrong\u003ePart number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003eRMC74-8690-AX1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;background:#fafafa;\"\u003e\u003cstrong\u003eNet weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003e60 g\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;background:#fafafa;\"\u003e\u003cstrong\u003eCompliance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003eSFF-TA-1016, SFF-8643, RoHS\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;background:#fafafa;\"\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003e24 months\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWorks with\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBoards with an MCIO 8x (SFF-TA-1016 74-pin) header — standard on most PCIe 4.0 server and workstation platforms from Supermicro, ASUS, ASRock Rack, Gigabyte and Tyan.\u003c\/li\u003e\n  \u003cli\u003eMiniSAS HD x4 NVMe backplanes and drive cages with SFF-8643 inputs.\u003c\/li\u003e\n  \u003cli\u003eU.2 adapters and converters that take an SFF-8643 input and present an SFF-8639 drive connector.\u003c\/li\u003e\n  \u003cli\u003ePCIe 3.0 equipment — the link negotiates down to 8 GT\/s automatically.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDoes not work with\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePCIe 5.0 links. SFF-8643 is a Gen4-generation interface; use the MCIO to U.2 or MCIO to SlimSAS version if you need 32 GT\/s.\u003c\/li\u003e\n  \u003cli\u003eSAS or SATA drives. The SFF-8643 connector can carry SAS in other designs, but your MCIO host port carries PCIe lanes only, so the device must be NVMe.\u003c\/li\u003e\n  \u003cli\u003eSlimSAS (SFF-8654) or U.2 (SFF-8639) device connectors — this cable does not adapt to those directly.\u003c\/li\u003e\n  \u003cli\u003eOEM systems that re-map the MCIO pinout (some Dell, HPE and Lenovo chassis). Ask us with your model number first.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTypical deployments\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBoard refresh in an existing 2U chassis.\u003c\/strong\u003e New Gen4 platform, existing SFF-8643 NVMe backplane, no chassis replacement.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNVMe tier next to SAS storage.\u003c\/strong\u003e Add two NVMe devices to a server that already has a MiniSAS HD cage.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWorkstation scratch volume.\u003c\/strong\u003e Two Gen4 U.2 drives through SFF-8643 adapters, without using a PCIe slot.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLab and validation rigs.\u003c\/strong\u003e Swap drives and backplanes between MCIO and SFF-8643 hardware with one cable.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhich MCIO breakout cable do you need?\u003c\/h2\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;font-size:14px;\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth style=\"border:1px solid #ddd;padding:8px 10px;background:#f2f2ef;text-align:left;\"\u003eDevice side\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:8px 10px;background:#f2f2ef;text-align:left;\"\u003eBest for\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:8px 10px;background:#f2f2ef;text-align:left;\"\u003eGeneration\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003e2 × MiniSAS HD (SFF-8643)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003e\n\u003cstrong\u003eThis product\u003c\/strong\u003e — reuse an existing SFF-8643 backplane or U.2 adapter\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003ePCIe 4.0\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003e2 × U.2 (SFF-8639)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003eDirect-attach U.2 drives, highest bandwidth (\u003ca href=\"https:\/\/diliving.com\/products\/mcio-x8-to-2x-u-2-nvme-adapter-sff-ta-1016-gen5-80cm\"\u003eMCIO to 2× U.2\u003c\/a\u003e)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003ePCIe 5.0\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003e1 × SlimSAS 8x (SFF-8654)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003eSlimSAS backplane, 8 lanes in one connector (\u003ca href=\"https:\/\/diliving.com\/collections\/slimsassff-8654\"\u003eSlimSAS cables\u003c\/a\u003e)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003ePCIe 5.0\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\n\u003ch3\u003eDoes this cable support PCIe 5.0?\u003c\/h3\u003e\n\u003cp\u003eNo. SFF-8643 is a 4-lane interface defined around the Gen4 generation, and this assembly is specified to 16 GT\/s per lane. If your drives and board are Gen5, use the \u003ca href=\"https:\/\/diliving.com\/products\/mcio-x8-to-2x-u-2-nvme-adapter-sff-ta-1016-gen5-80cm\"\u003eMCIO to 2× U.2 version\u003c\/a\u003e, which is rated for 32 GT\/s.\u003c\/p\u003e\n\n\u003ch3\u003eWhy use SFF-8643 at all instead of going straight to U.2?\u003c\/h3\u003e\n\u003cp\u003eBecause the hardware you already own decides it. A Gen4 x4 NVMe link delivers the same 7.88 GB\/s whether it passes through a U.2 connector or an SFF-8643 connector — the connector is not the bottleneck. If your backplane or drive cage is SFF-8643, this cable is the cheaper answer than replacing the cage.\u003c\/p\u003e\n\n\u003ch3\u003eDo I need to enable PCIe bifurcation?\u003c\/h3\u003e\n\u003cp\u003eOnly if your board wires the MCIO 8x header as a single x8 root port. Many server boards ship that header already split as 2 × x4, or drive it from a PCIe switch, in which case no setting is needed. Check the board manual for that specific header.\u003c\/p\u003e\n\n\u003ch3\u003eCan I connect SAS drives to the SFF-8643 ends?\u003c\/h3\u003e\n\u003cp\u003eNo. The connector type alone does not decide the protocol — the host port does, and MCIO carries PCIe lanes only. Put a SAS drive behind this cable and it will not be detected. For SAS, use a SlimSAS to SAS cable with an HBA that speaks SAS.\u003c\/p\u003e\n\n\u003ch3\u003eBoth ports at full speed, or do they share bandwidth?\u003c\/h3\u003e\n\u003cp\u003eBoth are full x4 links. The eight host lanes are physically split 4 + 4, so each port has its own four lanes. There is no bridge chip and no shared uplink.\u003c\/p\u003e\n\n\u003ch3\u003eWill it work with a U.2 adapter that has an SFF-8643 input?\u003c\/h3\u003e\n\u003cp\u003eYes — that is one of the main uses. The adapter converts the 4-lane link to an SFF-8639 drive connector; the cable only has to deliver four clean PCIe lanes to it, which it does at Gen4 rates.\u003c\/p\u003e\n\n\u003ch3\u003eIs 80 cm safe at Gen4 speed?\u003c\/h3\u003e\n\u003cp\u003eYes, Gen4 (16 GT\/s) tolerates this length on a well-built passive assembly. Keep the run as direct as possible, avoid sharp folds, and do not coil excess cable tightly against power rails.\u003c\/p\u003e\n\n\u003ch2\u003eIn the box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × MCIO 8x to 2 × MiniSAS HD cable, 80 cm (RMC74-8690-AX1)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBacked by a 24-month warranty. If a link trains at reduced width or does not appear in the OS, send us your board and backplane models — width and pinout issues are usually identifiable from those two facts.\u003c\/p\u003e\n\n\u003ch2\u003eRelated\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/diliving.com\/collections\/mini-cooledge-iomcio\"\u003eAll MCIO \/ Mini Cool Edge IO cables\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/diliving.com\/collections\/minisas-hdsff-8643\"\u003eMiniSAS HD (SFF-8643) cables and adapters\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/diliving.com\/products\/mcio-x8-to-2x-u-2-nvme-adapter-sff-ta-1016-gen5-80cm\"\u003eMCIO x8 to 2× U.2 NVMe, PCIe Gen5, 80 cm\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"DiLinKer","offers":[{"title":"Default Title","offer_id":51617440170280,"sku":"RMC74-8690-AX1","price":43.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0866\/1460\/6120\/files\/main-1.jpg?v=1775192768"}],"url":"https:\/\/diliving.com\/collections\/frontpage.oembed","provider":"DiLiVing","version":"1.0","type":"link"}