{"product_id":"diliving-4-port-u-2-to-pci-express-x8-sff-8639-nvme-ssd-adapter-with-sff-8643-mini-sas-hd-36-pin-connector-and-plx8724-chipset-for-servers-lrnv9324-4i","title":"DiLinKer 4-Port U.2 NVMe to PCIe x8 Adapter, 4x SFF-8643 MiniSAS HD, PLX8724, LRNV9324-4I","description":"\u003cp\u003eFour \u003cstrong\u003eU.2 NVMe drives\u003c\/strong\u003e from a \u003cstrong\u003ePCIe x8\u003c\/strong\u003e slot, through four \u003cstrong\u003eSFF-8643\u003c\/strong\u003e ports and a Broadcom \u003cstrong\u003ePLX8724\u003c\/strong\u003e switch. Half the drives and half the slot width of the 8-port card, at a lower price — the right shape for a 1U chassis or a board whose x16 slot is already taken.\u003c\/p\u003e\n\u003ch2\u003eWhen four drives and eight lanes are the right fit\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour genuine x4 links.\u003c\/strong\u003e The PLX8724 is a 24-lane switch: eight lanes up, four lanes out per port. Every drive gets a full x4 connection, and the host does not need bifurcation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHalf-height slot, half the price.\u003c\/strong\u003e An x8 slot is far easier to find free than an x16, especially in 1U servers and in boards where the x16 is holding a GPU. This card fits that gap without paying for eight ports you will not populate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8643 keeps your existing cabling.\u003c\/strong\u003e SFF-8643 is the connector most installed U.2 cages and backplanes already use. Four 8643-to-U.2 cables and you are done — cables are not in the box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe bandwidth picture.\u003c\/strong\u003e Gen3 x8 to the host is about 7.9 GB\/s shared across four drives. That is enough for most real workloads and honest about the rest: four drives reading flat out at once will queue.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot just two x4 cables in a slot.\u003c\/strong\u003e A board with two spare x4 slots and two x4-to-U.2 cables reaches four drives already. This card earns its place when the slots are not there — a 1U chassis with one riser, or a board whose second slot is blocked by a cooler — and when you want the four drives presented as one managed group behind one switch rather than four independent host links.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits where an x16 card will not.\u003c\/strong\u003e 148 × 80 mm with both brackets supplied, so it goes into a 1U riser as readily as into a tower. If your only free slot is a physical x16 wired for x8, this card links at x8 width and works — the 8-port version would not.\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 interface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #e3e6ea;padding:7px 10px\"\u003ePCIe 3.0 x8\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 ports\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #e3e6ea;padding:7px 10px\"\u003e4 × SFF-8643, MiniSAS HD, 36-pin (x4 each)\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 capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #e3e6ea;padding:7px 10px\"\u003e4 × U.2 NVMe (SFF-8639)\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\u003eSwitch chip\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #e3e6ea;padding:7px 10px\"\u003eBroadcom PLX PEX8724\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\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #e3e6ea;padding:7px 10px\"\u003eLRNV9324-4I\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\u003eCard size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #e3e6ea;padding:7px 10px\"\u003e148 × 80 mm\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\u003eBrackets\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #e3e6ea;padding:7px 10px\"\u003eFull profile fitted, low profile included\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\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #e3e6ea;padding:7px 10px\"\u003e2 years\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\"\u003eB089SQ84CH\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\u003eA free PCIe x8 slot (x16 slots work too, at x8 width)\u003c\/li\u003e\n\u003cli\u003eU.2 NVMe drives through four 8643-to-U.2 cables, sold separately\u003c\/li\u003e\n\u003cli\u003e1U and 2U chassis with four U.2 bays\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\u003eSAS or SATA drives — PCIe only\u003c\/li\u003e\n\u003cli\u003eMore than four drives; there is no second tier of ports\u003c\/li\u003e\n\u003cli\u003eSlimSAS backplanes without an adapter cable\u003c\/li\u003e\n\u003cli\u003eCables are not included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTypical deployments\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1U server with four NVMe bays.\u003c\/strong\u003e The card is short enough for a riser and does not need the x16 slot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorkstation with the x16 taken.\u003c\/strong\u003e Put the storage switch on x8 and leave x16 for the GPU.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmall all-NVMe nodes.\u003c\/strong\u003e Four drives, one switch, no bifurcation and no backplane re-cabling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003ch3\u003eHow many cables do I need?\u003c\/h3\u003e\n\u003cp\u003eFour — one SFF-8643 to U.2 cable per drive. Not included.\u003c\/p\u003e\n\u003ch3\u003eWill it work in an x16 slot?\u003c\/h3\u003e\n\u003cp\u003eYes, it will link at x8 width. The slot just has to be open-ended or physically x16.\u003c\/p\u003e\n\u003ch3\u003eDoes the board need bifurcation?\u003c\/h3\u003e\n\u003cp\u003eNo. The switch handles it.\u003c\/p\u003e\n\u003ch3\u003eFour drives on eight lanes — is that enough?\u003c\/h3\u003e\n\u003cp\u003eIt is about 7.9 GB\/s shared. Fine for mixed and sequential work; four simultaneous full-speed reads will queue. If that is your workload, take the 8-port x16 card.\u003c\/p\u003e\n\u003ch3\u003eCan I mix drive sizes and models?\u003c\/h3\u003e\n\u003cp\u003eYes. Each port is independent, so drives of different capacities and vendors coexist without issue.\u003c\/p\u003e\n\u003ch3\u003eWhat is in the box?\u003c\/h3\u003e\n\u003cp\u003eThe card with the full-height bracket fitted, plus a low-profile bracket. No cables.\u003c\/p\u003e\n\u003ch2\u003eIn the box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 × 4-port U.2 NVMe to PCIe x8 switch card (LRNV9324-4I)\u003c\/li\u003e\n\u003cli\u003e1 × low-profile bracket (full profile fitted)\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\/diliving-8-port-u-2-to-pci-express-x16-sff-8639-nvme-ssd-adapter-with-sff-8643-mini-sas-hd-36-pin-connector-and-plx8749-chipset-for-servers-lrnv9349-8i\"\u003e8-port version on PCIe x16\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/diliving-pci-express-x16-to-4-slimsas-8x-expander-8-u-2-nvme-ssd-adapter-with-sff-8654-74-pin-connector-and-broadcom-plx8748-chipset-for-servers\"\u003eSlimSAS 8x version, 4 ports to 8 drives\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/minisas-hdsff-8643\"\u003eAll MiniSAS HD (SFF-8643) cables\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DiLinKer","offers":[{"title":"Default Title","offer_id":47981359628584,"sku":"B089SQ84CH","price":238.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0866\/1460\/6120\/files\/41I7EbrYQ8L.jpg?v=1712028023","url":"https:\/\/diliving.com\/products\/diliving-4-port-u-2-to-pci-express-x8-sff-8639-nvme-ssd-adapter-with-sff-8643-mini-sas-hd-36-pin-connector-and-plx8724-chipset-for-servers-lrnv9324-4i","provider":"DiLiVing","version":"1.0","type":"link"}