1. Expand 7 ports on the desktop through the PCI Express slot, the port has a maximum data transmission speed of 5Gbps to achieve a fast connection. 2. Users do not need to plug in any additional power cords from the power supply. 3. Compatible with PCIE 2.0/3.0/4.0 versions, supports PCI-E X1 through PCIE X16 slots.. 4. The internal USB card provided from the motherboard through the PCI Express slot-to ensure a stable connection and improve data transmission speed. Will not lose the connection problem like an external USB Hub. Supported Operating Systems: For Windows XP, Vista, 7, 8, 8.1, 10(32/64bit), Windows Server 2003, 2003R2, 2008, 2008R2, 2012, 2012R2, 2016, 2019(32/64bit), For Mac Pro 4.1,5.1,7.1(model 2009~2020),Linux,Ubuntu 20.04 system . (Windows 7 / XP system needs to install the driver from the attached CD, or download the driver according to the content of the user manual. Please feel free to contact*us if you encounter compatibility issues/not working.) NOTE: 1. This USB PCIE card only supports data transmission, not video signal transmission (DP ALT,HDMI,VGA). 2.USB-A port power supply: 5V-0.9A; USB-C port power supply: 5V-3A, used for low-power USB devices (not supported for monitors).