Complies with PCI-Express specification version 2.0 Complies with USB3.0 SuperSpeed specification version 1.0 Complies with xHCI specification version 1.0 Main control chip: Renesas uPD720201 chipset The maximum transmission rate is up to 5Gbps, which is much higher than the 480Mb/s of USB2.0, up to 10 times<br><br>Backward compatible with USB2.0, USB1.1, USB1.0 Transmission rate:5000/480/12/1.5Mbps USB power output:up to 5V 2A (increased current type) Support USB hot plug function Support Windows XP/2003/Vista/win7/win8/2003/10/11 and above systems, etc. Description: One of the few expansion cards on the market that can support LINUX system. Designed without external power supply, it uses 2 5A high-power DC-DC. The expansion card uses 7 high-performance solid capacitors, which greatly ensures the stability of USB power supply. The built-in USB is plugged in backwards, and supports small chassis, and USB devices are built in. Hardware requirements: A motherboard that supports PCI-E This product is a desktop PCI-E expansion card. It requires an empty PCI-E slot on the motherboard to install and use it. It is also necessary to make sure that the slot is not blocked by the graphics card. It cannot be installed and used on the PCI slot. Do not insert it into the PCI slot. Colour:Black Material:PCB+Metal<br><br>Package Contents: 1 * USB 3.0 PCI-E Expansion Card<br><br>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.