Four-channel USB3.2 expansion card Each channel has exclusive bandwidth Each channel is independently powered Bus rate: 20GT/S Bus specification: PCI-E2.0X4 Interface specification: USB3.2 Gen1*8 Interface rate: 5Gbps Interface speed: about 400MB/S Master control: ASM1812*1+ASM3042*4 Interface specification: USB 3.2 Gen1*8 Interface rate: 5Gbps Bus specification: PCI-E 2.0 X4 Bus rate: 20Gbps Installation condition: free PCI-E X4, X8, X16, slots Power supply: PCI-E Driver support: WIN7, 8, 10, 11, Linux, Operating temperature: 0~60 Storage temperature: -20~80 Input voltage: DC12V Input current: 4A Different batches may have different screen printing/appearance, but it not affect the use Colour:Black Material:PCB+Metal Package Contents: 1 x USB 3.0 PCI Express 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.