{"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","url":"https:\/\/diliving.com\/products\/m-2-to-u-2-nvme-ssd-adapter-sff-8639-75cm","provider":"DiLiVing","version":"1.0","type":"link"}