PCI-E 1X riser card, can be used with PCI-E 1X to 16X Riser Card, for Bitcoin & Crypto Mining Ethereum Mining ETHThe adapter card cannot be connected to USB devices, since the USB ports transfer PCI-E signals, not USB signals.PCI Express X1 slot golden fingers for stable and fast data transform.When inserting the golden finger end into the PCI-E slot of the motherboard, please pay attention to the direction and do not insert it backwards!Compatible with PCI-E 1X, 4X, 8X, 16X slots on the motherboard.colour:WhiteMaterial:Plastic + MetalPackage Contents:5 x PCI-E 1X Adapter CardOnly 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.