Laptop 54Mm Express Card Expresscard To 3 Port Usb 3.0 Adapter Superspeed 5Gbps Support 3 x USB ports, transfer speed up to 5Gbps Compatible with PCI-Express and 1.0a Support system : Windows 2000/XP/2003/Vista/Win 7 of 32 / 64 bit server It uses NEC FL1100 chipset USB 3.0 mode up to 5 Gbps