Add-on cards to add 2 USB 3.0 (5Gbps) on a computer PCIExpress. D720200 NEC chipset. Can 'also be mounted on PC low-profile (low profile) with the bracket included. Compatible with USB 1.1 and 2.0. Compliant with PCI-Express 2.0 specifications. X1 bus interface. Supports PCI Bus Power Management Interface Specification revision 1.2. Supports: Windows 7, Vista, XP