1.PCIe 4.0 x4 (64Gbps) High-Speed Interface, backward compatible with PCIe 3.0. 2.Supports M.2 NVMe SSDs (2230/2242/2260/2280) 3.Hot-Swap & Driver-Free. Tool-free SSD replacement for 24/7 operation (enterprise servers/NAS). 4.Plug & Play - No drivers needed (for /Linux/Unix compatible). 5.Reinforced PCB + gold-plated contacts for stable signal transmission. nstallation Warning:The EDSFF 1U interface must be inserted from the front,and incorrect insertion cause permanent damage to the device! Incorrect insertion may cause a short circuit or even damage the adapter, SSD or host system. undergo quality inspection before leaving the factory, but any damage caused by reverse insertion, violent installation or other manual operations is at your own risk. Before installation, please that the interface is in the correct direction! Optimized thermal design for E1.S server racks & data centers. Color: Material: PCB Package Contents: 1 x M.2 NVMe to E1.S Adapter 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.