{"product_id":"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","title":"DiLinKer 8-Port U.2 NVMe to PCIe x16 Adapter, 8x SFF-8643 MiniSAS HD, PLX8749, LRNV9349-8I","description":"\u003cp\u003eEight \u003cstrong\u003eU.2 NVMe drives\u003c\/strong\u003e from one PCIe x16 slot, through eight \u003cstrong\u003eSFF-8643 (MiniSAS HD)\u003c\/strong\u003e ports and a Broadcom \u003cstrong\u003ePLX8749\u003c\/strong\u003e switch. This is the version to take if your cables and backplanes are already 8643 — the older, cheaper, far more common connector.\u003c\/p\u003e\n\u003ch2\u003eWhy 8643 rather than SlimSAS\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEight x4 ports behind one switch.\u003c\/strong\u003e The PLX8749 is a 48-lane switch: sixteen lanes up to the host, four lanes out to each of eight ports. Every drive gets a genuine x4 link, and none of them depend on the motherboard understanding bifurcation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8643 is the connector your shelf already uses.\u003c\/strong\u003e SlimSAS is smaller and newer; SFF-8643 is what most existing U.2 backplanes, cables and drive cages in the field are built around. If you are expanding an older chassis rather than building new, this card avoids re-cabling the whole box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEight cables, one card.\u003c\/strong\u003e Each port takes a single SFF-8643 to U.2 (SFF-8639) cable. Cables are not included — budget for eight of them, or tell us the drive count and we will put the right set together.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBandwidth, stated plainly.\u003c\/strong\u003e Gen3 x16 to the host is about 15.75 GB\/s shared across eight drives. Eight Gen3 drives can saturate that between them, so this card is oversubscribed by design. It is the right trade for capacity and for workloads that do not read all eight at full speed at once.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhere the drive power comes from.\u003c\/strong\u003e The card supplies PCIe only. If your drives sit in a U.2 backplane, the cage powers them. If you are running bare 8643-to-U.2 cables instead, each of those cables carries its own SATA power tail and every drive needs a free PSU connector — eight of them. Count your PSU leads before you plan the build; this is the step people forget.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoth brackets in the box.\u003c\/strong\u003e The full-height bracket is fitted; a low-profile one is included, because this card goes into 1U and 2U chassis as often as into a tower. 148 × 80 mm, so it clears a standard riser without overhanging the neighbouring slot.\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 x16\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\"\u003e8 × 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\"\u003e8 × 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 PEX8749\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\"\u003eLRNV9349-8I\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\"\u003eB089SQ9HPX\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 x16 slot, no bifurcation needed\u003c\/li\u003e\n\u003cli\u003eU.2 NVMe drives through eight 8643-to-U.2 cables (sold separately)\u003c\/li\u003e\n\u003cli\u003eExisting SFF-8643 backplanes and drive cages\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 on the drive ports — PCIe only\u003c\/li\u003e\n\u003cli\u003ex8 slots: the uplink expects sixteen lanes\u003c\/li\u003e\n\u003cli\u003eSlimSAS 8654 backplanes without an adapter cable\u003c\/li\u003e\n\u003cli\u003eCables are not included in the box\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTypical deployments\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpanding an existing 8643 chassis.\u003c\/strong\u003e Eight more U.2 drives without changing a single cable in the shelf.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2U all-NVMe nodes.\u003c\/strong\u003e One slot, eight drives, two brackets so it fits either chassis height.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArchive and capacity tiers.\u003c\/strong\u003e Dense NVMe capacity where aggregate throughput matters more than any single drive.\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\u003eEight: one SFF-8643 to U.2 (SFF-8639) cable per drive. We stock them and can bundle the right quantity.\u003c\/p\u003e\n\u003ch3\u003eDoes the board need bifurcation?\u003c\/h3\u003e\n\u003cp\u003eNo. The PLX8749 does the switching. A plain x16 slot is all that is required.\u003c\/p\u003e\n\u003ch3\u003eWill it work in an x8 slot?\u003c\/h3\u003e\n\u003cp\u003eNot reliably. The card is designed around a x16 uplink.\u003c\/p\u003e\n\u003ch3\u003eCan I use Gen4 drives?\u003c\/h3\u003e\n\u003cp\u003eThey will run at Gen3 speed through this switch. For Gen4 across eight drives you need a Gen4 switch card.\u003c\/p\u003e\n\u003ch3\u003eWhat is in the box?\u003c\/h3\u003e\n\u003cp\u003eThe card and a low-profile bracket. The full-height bracket is already fitted. No cables.\u003c\/p\u003e\n\u003ch3\u003eDo my drives need individual power?\u003c\/h3\u003e\n\u003cp\u003eThrough a U.2 backplane, no — the cage powers them. With bare 8643-to-U.2 cables, each cable carries the drive power tail.\u003c\/p\u003e\n\u003ch2\u003eIn the box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 × 8-port U.2 NVMe to PCIe x16 switch card (LRNV9349-8I)\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-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\"\u003e4-port version on PCIe x8\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":47981358350632,"sku":"B089SQ9HPX","price":288.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0866\/1460\/6120\/files\/41GtrLCRXEL.jpg?v=1712028002","url":"https:\/\/diliving.com\/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","provider":"DiLiVing","version":"1.0","type":"link"}