Expansion card LogiLink for 4 additional USB 3.0 ports. The interface is installed in the PCI Express port of your computer with Plug and Play support. It supports USB 3.0 transfer rates of up to 5 Gbps and an electricity supply of up to 900 mA per port. Backwards-compatible USB 2.0 or USB 1.1 devices are operated.- PCI Express card, USB 3.0.- Chipset: VIA VL805.- 4x USB 3.0 (Type A) female.- Backward compatible with USB 2.0/1.1.- Specification according to USB 3.0.- Max. Transfer rate: 5 GBit/s.- USB Legacy function.- Internal power supply via 5.25".- Maximum of 900 mA per USB 3.0 port.- Supports Windows XP/Vista/7/8/8.1.