The transfer rate of the USB 3.0 interface of this expansion card can reach 5 gbps, and it is backward compatible with USB 2.0 and 1.1. The USB interface can provide 5v2a power for external devices, and only two power modules are required, no additional power supply is required. Made of PCB and metal material, it is more and sturdy. It is suitable for Linux and for XP/7/8/8.1/10 and 32-bit or 64-bit whql certified drivers. Moreover, it complies with PCI Express standard version 2.0 and meets the general standard of Serial Bus 3.0. Colour:Photo Color Material:PCB+metal Package Contents: 1 x 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.