PCIe USB 3.0 expansion card 5Gbps (2xUSB-C, 6xUSB3.0) 6-Port USB3.0, 2-Port USB C External add on card For desktop pc computer PCI-e 1x slot (Compatible with PCI-e 1x/4x/8x/16x) Hi Speed 5Gpbs Transfer Speed; USB3.0 Backwards compatible with USB 2.0 and 1.1 devices Support Windows 10/8/7/XP System NEC+VIA Chipset, more stable and compatible than others No need power supply, easy to use