Each interface is equipped with an interface protection insurance. When the external USB device is short-circuited or the current is too , the power supply can be cut off instantly to protect the peripherals and the computer from damage, and it will automatically return to normal after troubleshooting. The card comes with a power supply module, which can provide 4A power supply, and the inductor adopts a closed high-power inductor of 12mm x 12mm The wiring of the entire circuit board is clear, neat and reasonable, and there is no deletion of any parts So as to more stable operation and more durable use This expansion card has two standard USB 3.0 interfaces, while 2.0 has only 4, and the 3.0 interface needs 9 wires for data transmission If all 9 wires are in contact, it will work in 3.0 mode. If one wire is not in contact, it will work in 2.0 mode Color: As Shown Material: PC+metal Package Contents: 1 x Riser 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.