1. This is a PCI-Express card 8 x High-speed USB 3.0 interface expands when you need to use multiple external USB products at the same time, this Express card be the . 2. ConformsTo PCI Express standard version 2.0. 3. USB 3.0 interface Transmission rate could reach 5Gbps, downward compatible with USB 2.0 or 1.1. 4. A USB device to be connected simultaneously 7port. 5. USB interface could provide 12V4A power supply to the external device.6. Supports Linux or XP or 7 or 8 or 10 or 11. Main parameters: Interface specification: USB3.2 Gen1 TYPE-Ax8 Interface rate: 5Gbps Interface speed: about 390MB or S Bus specification: PCI-E 2.0x4 Bus rate: 10Gbps Installation conditions: free PCI-E X4.X8,X16, slot Power supply: PCI-E Working temperature: 0-60 Storage temperature: 0-80 Input voltage: DC12V Input current: 4A Colour:green Material:PCBandMetal The actual product may have slight color difference or difference, which not affect the use Package Contents: 1 x USB 3.0 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.