{"product_id":"mcio-x8-to-2x-u-2-nvme-adapter-sff-ta-1016-gen5-80cm","title":"DiLinKer MCIO x8 to 2*U.2 NVMe Adapter, SFF-TA-1016 74Pin to 2*SFF-8639 68Pin, PCIe Gen5 Mini Cooledge IO Cable with Power, 80cm","description":"\u003cp\u003e\u003cstrong\u003eOne MCIO port, two U.2 drives.\u003c\/strong\u003e The DiLinKer RMC74-8986-AX1 is an 80 cm internal PCIe 5.0 cable that splits a single MCIO 8x host connector (SFF-TA-1016, 74-pin) into two independent U.2 NVMe device connectors (SFF-8639, 68-pin). The eight host lanes are broken out as two full x4 links, so each drive trains at its own width and generation — a PCIe 5.0 drive reaches its rated throughput on one port while a PCIe 4.0 drive runs at Gen4 on the other, with no PCIe switch card, no riser and no driver to install.\u003c\/p\u003e\n\n\u003ch2\u003eWhy this adapter cable\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e8 lanes in, 2 × x4 out.\u003c\/strong\u003e Each U.2 bay gets a dedicated PCIe x4 link instead of sharing bandwidth through a bridge chip.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePCIe 5.0 rated, 32 GT\/s per lane.\u003c\/strong\u003e Up to roughly 15.75 GB\/s per port. Fully backward compatible with PCIe 4.0 and PCIe 3.0 hosts and drives, so it also works on older platforms.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower is carried in the assembly.\u003c\/strong\u003e The U.2 side receives 12 V through the integrated power lead, so drives run without a backplane or a separate SATA power run.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt to the SFF pinouts.\u003c\/strong\u003e Host side SFF-TA-1016 74-pin, device side SFF-8639 68-pin — the two connector standards the drives and boards are actually specified against.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e80 cm of reach.\u003c\/strong\u003e Long enough to route from a mid-board MCIO header to a rear drive cage in 1U and 2U chassis without strain on the connector.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePassive and firmware-free.\u003c\/strong\u003e No retimer, no power-sequencing logic, no BIOS or OS setting specific to the cable itself.\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 × U.2 (SFF-8639), 68-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 5.0 (32 GT\/s per lane); backward compatible with 4.0 \/ 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;\"\u003eUp to 128 GT\/s (about 15.75 GB\/s at Gen5 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\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003eIntegrated power lead from the system PSU\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 — does not carry 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;\"\u003eRMC74-8986-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\u003eSKU \/ EAN\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003eB0CCV4PXV8 \/ 6970958109732\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;\"\u003e104 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\u003eOperating temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003e0 – 70 °C\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-8639, 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\u003eServer and workstation boards that expose an MCIO 8x (SFF-TA-1016 74-pin) port — common on PCIe 5.0 platforms from Supermicro, ASUS, ASRock Rack, Gigabyte, Tyan, and on AMD EPYC and Intel Xeon Scalable reference designs.\u003c\/li\u003e\n  \u003cli\u003eU.2 NVMe SSDs such as Samsung PM9A3 \/ PM1733 \/ PM1743, Micron 7450 \/ 9300, Kioxia CM6 \/ CD6, Solidigm D7-P5510 \/ D5-P5316 and Intel P4510 \/ P5520 series.\u003c\/li\u003e\n  \u003cli\u003eU.2 drive cages and hot-swap bays that terminate in SFF-8639.\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\u003eSlimSAS (SFF-8654) or MiniSAS HD (SFF-8643) hosts — those need a different cable in this range, not an adapter on this one.\u003c\/li\u003e\n  \u003cli\u003eSAS or SATA drives. The MCIO host port carries PCIe lanes only.\u003c\/li\u003e\n  \u003cli\u003eOEM systems that re-purpose the MCIO connector with a proprietary pinout (some Dell, HPE and Lenovo chassis). Check the board manual, or message us with your model before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTypical deployments\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBoot and log tier.\u003c\/strong\u003e Two U.2 drives in mirror from a single MCIO port, leaving the other ports free for data drives.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAI and HPC nodes.\u003c\/strong\u003e Gen5 U.2 for dataset staging where the drive, not the cable, is the bottleneck.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1U \/ 2U chassis with rear cages.\u003c\/strong\u003e The 80 cm run reaches the back of the case without a mid-board backplane.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWorkstations building a ZFS or Storage Spaces pool.\u003c\/strong\u003e Two NVMe devices without spending a PCIe slot on a quad M.2 or U.2 card.\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;\"\u003eHost port\u003c\/th\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;\"\u003eUse when\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;\"\u003eMCIO 8x\u003c\/td\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;\"\u003e\n\u003cstrong\u003eThis product\u003c\/strong\u003e — direct-attach NVMe drives or a U.2 cage\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003eMCIO 8x\u003c\/td\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;\"\u003eYou already own an SFF-8643 backplane or U.2 adapter (\u003ca href=\"https:\/\/diliving.net\/products\/mcio-x8-to-2x-minisas-hd-sff-ta-1016-sff-8643-gen4-80cm\"\u003eGen4 version\u003c\/a\u003e)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003eMCIO 8x\u003c\/td\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;\"\u003eBoard-to-board link to a SlimSAS backplane (\u003ca href=\"https:\/\/diliving.net\/collections\/slimsassff-8654\"\u003eSlimSAS cables\u003c\/a\u003e)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003eSlimSAS 8x\u003c\/td\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;\"\u003eYour board has SlimSAS headers rather than MCIO (\u003ca href=\"https:\/\/diliving.net\/collections\/u-2-nvmesff-8639\"\u003eU.2 cables\u003c\/a\u003e)\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 work on a PCIe 4.0 motherboard?\u003c\/h3\u003e\n\u003cp\u003eYes. The cable is passive, so the link speed is negotiated between the host and the drive. A Gen4 board with Gen4 drives trains at 16 GT\/s; a Gen5 drive on a Gen4 board simply runs at Gen4. Nothing needs to be configured.\u003c\/p\u003e\n\n\u003ch3\u003eDo I have to enable PCIe bifurcation?\u003c\/h3\u003e\n\u003cp\u003eIt depends on how your board wires the MCIO port. Many server boards ship the MCIO 8x header already configured as 2 × x4, or drive it from a PCIe switch, in which case there is nothing to change. If your board exposes that header as a single x8 root port, enable x4x4 bifurcation for that port in the BIOS. The board manual will state which case applies.\u003c\/p\u003e\n\n\u003ch3\u003eDo the U.2 drives need their own power cable?\u003c\/h3\u003e\n\u003cp\u003eNo separate SATA or Molex run to each drive — power is delivered through the integrated lead in this assembly. You connect that lead to the system PSU once, and both U.2 connectors are powered from it.\u003c\/p\u003e\n\n\u003ch3\u003eWhat is the difference between MCIO and SlimSAS?\u003c\/h3\u003e\n\u003cp\u003eBoth are compact internal PCIe connectors with 8-lane (74-pin) variants, but they are different standards with different housings and latches, and they are not interchangeable. MCIO is SFF-TA-1016 and is the connector most PCIe 5.0 server boards use for NVMe breakout. SlimSAS is SFF-8654 and is also used for SAS 4.0. If you are unsure which one is on your board, send us a photo of the header and we will confirm.\u003c\/p\u003e\n\n\u003ch3\u003eCan I connect SAS or SATA drives to this cable?\u003c\/h3\u003e\n\u003cp\u003eNo. The MCIO 8x port carries PCIe lanes only, so the device side must be a U.2 NVMe drive or a U.2 NVMe backplane. For SAS drives, use a SlimSAS to SAS fan-out cable instead.\u003c\/p\u003e\n\n\u003ch3\u003eWill it work in a Dell, HPE or Lenovo server?\u003c\/h3\u003e\n\u003cp\u003eOften not, unless the system uses the standard SFF-TA-1016 pinout. Several OEMs re-purpose the same physical connector with a proprietary lane order, and a standard cable will either not link or will link at reduced width. Tell us the exact model before ordering and we will check it against our pinout notes.\u003c\/p\u003e\n\n\u003ch3\u003eIs 80 cm too long for PCIe 5.0?\u003c\/h3\u003e\n\u003cp\u003eAt 32 GT\/s every centimetre adds insertion loss, so keep the run as short as your chassis allows and avoid tight bends or sharp folds. 80 cm is intended for in-chassis routing to a rear cage. If a link trains below Gen5, cable length and routing are the first things to check.\u003c\/p\u003e\n\n\u003ch2\u003eIn the box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × MCIO 8x to 2 × U.2 NVMe adapter cable, 80 cm (RMC74-8986-AX1)\u003c\/li\u003e\n  \u003cli\u003eIntegrated power lead\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBacked by a 24-month warranty. If a cable arrives damaged or fails to link, contact us with your board model and we will replace it or help you trace the fault.\u003c\/p\u003e\n\n\u003ch2\u003eRelated\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/diliving.net\/collections\/mini-cooledge-iomcio\"\u003eAll MCIO \/ Mini Cool Edge IO cables\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/diliving.net\/collections\/u-2-nvmesff-8639\"\u003eU.2 NVMe (SFF-8639) cables and adapters\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/diliving.net\/products\/mcio-x8-to-2x-minisas-hd-sff-ta-1016-sff-8643-gen4-80cm\"\u003eMCIO x8 to 2× MiniSAS HD, PCIe Gen4, 80 cm\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"DiliVing","offers":[{"title":"Default Title","offer_id":48720580313384,"sku":"B0CCV4PXV8","price":38.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0866\/1460\/6120\/files\/1-1.jpg?v=1712645847","url":"https:\/\/diliving.net\/products\/mcio-x8-to-2x-u-2-nvme-adapter-sff-ta-1016-gen5-80cm","provider":"DiLiVing Professional Computer Cable Store","version":"1.0","type":"link"}