1.Directly connected to U.2 NVMe SSD by MCIO to SFF-8639 cable 2.Support bifurcated in quad x4 data link width configuration(CPU and BIOS both support) 3.Support bifurcated in two x8 data link width configuration (CPU and BIOS both support) 4.Build in MCIO 8i connector 2 sets,pin-out defined by SFF-9402 5.PCIe reversal HARDWARE Model: XIC PE5160-4IL Number of Device: 4 internal Bus Type: PCI Express Interface: MCIO 8I CONNECTOR(S) Device Connector: 2xMCIO(74 Pin,x8 PCIe Gen 5) Host Bus Type: PCI Express x16 ENVIRONMENTAL Humidity: 15% - 90% Operating Temperature: 5C to 50C (41F to 122F) Storage Temperature: -25C to 70C (-13F to 158F) PHYSICAL CHARACTERISTICS Dimension:About 146.5mm x 39.4mm The appearance,color and printing of the product from batch to batch,but it will not affect the use Colour:As Shown Material:PCB Package Contents: 1x PCI Express x16 to Two MCIO 8i Adapter 1x Low-profile bracket 1x Full-height bracket (installed) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.