Features 1、Widely Compatible: This PCIE to USB 3.0 expansion card is backward compatible with USB1.1/2.0, which can adapt to a variety of USB devices. 2、8A Power Supply: This USB3.0 expansion card is equipped with 4 independent power management chips, no external power supply is required, whihc ensures that each USB port has exclusive 2A power supply. 3、Fast Heat Dissipation: This PCIE to USB 3.0 adapter card adopts premium heat sink that ensures better heat dissipation and higher stability. 4、Stable Supply: Each interface is equipped with an independent voltage stabilizing capacitor to ensure a stable power supply for each interface. It can withstand high temperatures of 250 degrees. 5、High Safety: This PCIE to USB 3.0 expansion card adopts independent safety insurance that can instantly cut off the power supply when the external USB device has a short circuit or excessive current. After the fault is eliminated, it will automatically return to normal. Specification Item Type: PCIE to USB 3.0 Expansion Card Material: Printed Circuit Board Master Chip: NEC720201 Bus Interface: PCIE X1 (Compatible with x1, X4, X8, X16) Extended Interface: USB3.0 x 4 Working Environment: Minus 50℃ to 70℃ Compatible Systems: For Xp, for Win7, for Win8, for Win 8.1, for Win10, for Linux, Etc Package List 1 x PCIE to USB 3.0 Expansion Card 2 x Screw 1 x Screwdriver 1 x CD Drivers