PCI-E 1X riser card, can be used with PCI-E 1X to 16X Riser Card, for Bitcoin & Crypto Mining Mining ETH The 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:White Material:Plastic + Metal Package Contents: 5 x PCI-E 1X Adapter 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.