1. Wire-Free Direct Plug 2. Plug And Play 3. Hollow Heat Dissipation 4. Wire-Free Direct Installation, Stable And Lossless, No Speed Drop, Compatible With Pcie3.0, Support X4/X8/X16 Slots 5. No Driver Required, Plug And Play, Providing More Stable Performance And High-Speed Mass Storage Solutions Product name: PCle4.0x4 to 2.5inch NVMeSSD U.2 (SFF-8639) expansion card Model: IO-PCE8639-U2 Access bus: PCle4.0 x4 Interface type: U.2(SFF-8639) Supported device: 2.5inch U.2 NVMe SSD Scope of use: servers, workstations, desktops, etc. Host slot: PCle X4, X8, X16 System support: Windows, Linux and other systems Storage temperature: -65~150C Working temperature: -40~85C Colour:black Material:PCB Size:132 x 90mm Package Contents: 1 x Expansion Card 1 Set x Screw Installation Tools 1 x English Manual 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.