Backwards compatible with PCIe 2.0 and PCIe 1.0 Supporting transferrate of 2.5Gb(250MB/s),5Gb(500MB/s),and 8Gb(1GB/s)per PCI Express interface: x16 Supports (NVMe) Support for 4-Port x4 M.2 Key M NVMe SSD device Supports M.2 SSD modules sizes:2230,2242,2260,2280 Supports M.2" M" key and "B+M" key with PCIe Protocol Automatic detection of configuration on boot-up Support L1 substate deep power saving mode Support wake up function in S3/S4 Support hot-plug, surprise remove operating temperature range:0-85C Support : Linux kernel3.17 or above,Win7,Win8,Win8.1,Win10 32or 64bit No driver is required because the driver is transparent to the Colour:As Shown Material:PC+Aluminum Alloy The actual product may have slight color difference or difference, which not affect the use Package Contents: 1 * expansion card 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.