DOWNWARD COMPATIBLE TO USB 2.0/1.1 DEVICES - SUPPORTS PLUG AND PLAY AND HOT-SWAPPING SUPPORTED DATA TRANSFER RATES: SUPPER-SPEED (5GBPS), HIGH-SPEED (480MBPS), FULL-SPEED (12MBPS) AND LOW-SPEED (1.5MBPS) SUPPORTS PCI BUS POWER MANAGEMENT INTERFACE SPECIFICATION REVISION 1.2 2 X USB 3.0 PORTS - CHIPSET: NEC D720200 - INCL. LOW PROFILE BRACKET - SUPPORTS: WINDOWS 7, VISTA, XP