{"product_id":"mcio-x8-to-2x-mcio-x4-sff-ta-1016-gen5-70cm","title":"DiLinKer MCIO x8 to 2*MCIO x4, SFF-TA-1016 74Pin to 2*SFF-TA-1016 38Pin, PCIe Gen5 Mini Cooledge IO, Double Straight Cable 70cm(CBL-MCIO-1235M5Y)","description":"\u003cp\u003eSplit one PCIe 5.0 MCIO 8x port into two MCIO 4x ports. The DiLinKer RMC74-6891 (70 cm) takes a single MCIO 8x host connector (SFF-TA-1016, 74-pin) and breaks its eight lanes out to two MCIO 4x connectors (SFF-TA-1016, 38-pin), four lanes each — the cable for feeding 4-lane MCIO devices from a board whose headers are all 8-lane.\u003c\/p\u003e\n\u003ch2\u003eWhy this cable\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePCIe 5.0 rated, 32 GT\/s per lane.\u003c\/strong\u003e Two full x4 links at up to about 15.75 GB\/s each; backward compatible with Gen4\/Gen3.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8 lanes in, 2 × x4 out.\u003c\/strong\u003e A physical lane split — no switch chip, no retimer, no driver.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeeps everything on MCIO.\u003c\/strong\u003e For chassis where both the host headers and the device ports are MCIO, no adapter generation-mixing needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble straight construction.\u003c\/strong\u003e Two separate straight legs for clean routing around risers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePassive assembly.\u003c\/strong\u003e No power draw, 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 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;width:38%;\"\u003e\u003cstrong\u003eDevice connectors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003e2 × MCIO 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\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;width:38%;\"\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;width:38%;\"\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;width:38%;\"\u003e\u003cstrong\u003eProtocol\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003ePCIe only — MCIO 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;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\u003ePart number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003eRMC74-6891\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\u003eEAN\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 10px;\"\u003e6970958106632\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\u003ePCIe 5.0 boards with an MCIO 8x (SFF-TA-1016 74-pin) header.\u003c\/li\u003e\n\u003cli\u003eMCIO 4x (38-pin) inputs on NVMe backplanes, U.2 adapters and drive cages.\u003c\/li\u003e\n\u003cli\u003ePCIe 4.0 and 3.0 equipment — links negotiate down 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\u003eSAS or SATA devices. MCIO carries PCIe lanes only.\u003c\/li\u003e\n\u003cli\u003eSlimSAS (SFF-8654) device ports — for those use the MCIO to SlimSAS version.\u003c\/li\u003e\n\u003cli\u003eOEM systems that re-map the MCIO pinout (some Dell, HPE and Lenovo chassis) — check with us first.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTypical deployments\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGen5 NVMe tier.\u003c\/strong\u003e Feed two 4-lane MCIO device groups from one host header.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoard refresh.\u003c\/strong\u003e Keep MCIO 4x backplanes when the new platform standardises on 8x headers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRiser-friendly routing.\u003c\/strong\u003e Two straight legs route around risers better than one wide bundle.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003ch3\u003eDo I need to enable PCIe bifurcation?\u003c\/h3\u003e\n\u003cp\u003eIf the board wires the MCIO 8x header as a single x8 root port, enable x4x4 bifurcation in the BIOS. Many boards present the header as 2 × x4 or drive it from a PCIe switch, in which case no change is needed. The board manual will say which.\u003c\/p\u003e\n\u003ch3\u003eMCIO 8x and 4x — what is the difference?\u003c\/h3\u003e\n\u003cp\u003eConnector width and lane count: the 8x is 74-pin carrying eight lanes, the 4x is 38-pin carrying four. They use the same SFF-TA-1016 standard family but will not mate with each other, hence this cable.\u003c\/p\u003e\n\u003ch3\u003eCan I run SAS through it?\u003c\/h3\u003e\n\u003cp\u003eNo. The MCIO host port carries PCIe only, so the device side must be PCIe equipment such as an NVMe backplane.\u003c\/p\u003e\n\u003ch3\u003eIs 70 cm fine at Gen5?\u003c\/h3\u003e\n\u003cp\u003eAt 32 GT\/s every centimetre counts. Keep the run direct, avoid sharp folds, and if a link trains below Gen5 check routing first — the hardware will fall back to Gen4 safely.\u003c\/p\u003e\n\u003ch2\u003eIn the box\u003c\/h2\u003e\n\u003cul\u003e\u003cli\u003e1 × MCIO 8x to 2 × MCIO 4x cable, 70 cm (RMC74-6891)\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 Cool Edge IO 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, PCIe Gen5, 80 cm\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/diliving.com\/products\/diliving-mcio-x8-to-2-slimsasx4-sff-ta-1016-74pin-to-2-sff-ta-1016-38pin-pcie-gen5-mini-cooledge-io-double-straight-cable-80cmcbl-mcio-1235m5y\"\u003eMCIO x8 to 2× SlimSAS x4, PCIe Gen5, 80 cm\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DiLinKer","offers":[{"title":"Default Title","offer_id":47981326532904,"sku":"B0CJBG4KQ6","price":43.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0866\/1460\/6120\/files\/1-1_e515c29b-188a-4954-bf9c-9843332a1357.jpg?v=1712646473","url":"https:\/\/diliving.com\/products\/mcio-x8-to-2x-mcio-x4-sff-ta-1016-gen5-70cm","provider":"DiLiVing","version":"1.0","type":"link"}