The expansion card uses 10 high-performance solid capacitors, which greatly ensures the stability of the USB power supply. This product uses high-quality materials, is durable, has a long service life, and is firm and stable in use. Quick start, loading and file transfer. Low power consumption, quiet, reliable and durable. Compact and portable: being so mini and light-weight, this product does not take much space and can be easily taken away. Because this card has 7 ports at the rear, it does not support small chassis. Output interface: 7 ports USB3.2 GEN1 Main control chip: RENESAS D720201+720210 Interface rate: 5Gbps Support slot: PCI-E 1X Support system: WINXP/WIN7/8/10/11/LINUX Compliant with PCI-Express specification version 2.0 Compliant with USB3.0 SuperSpeed specification version 1.0 Compliant with xHCI specification version 1.0 Main control chip: Renesas uPD720201+D720210 chipset The maximum transmission rate is as high as 5Gbps, which is much higher than 480Mb/s of USB2.0, up to 10 times; Backward compatible with USB2.0, USB1.1, USB1.0 Transmission rate: 5000/480/12/1.5Mbps USB power output: up to 5V 1.5A (increased current type) Support USB hot plug function Support Windows XP/2003/Vista/win7/win8/2003/10 and above systems. Hardware Requirements: A motherboard that supports PCI-E This product is a desktop PCI-E expansion card. It needs to have a free PCI-E slot on the motherboard to install and use it. Make sure that the slot is not blocked by the graphics card. In addition, it cannot be installed and used on the PCI slot. Never plug it into a PCI slot. size: 120 x 98 x 75MM Material: PCB colour: black Package Contents: 2 x USB PCIE Adapter Card