Allytech TM 5 Port (4+1) PCI High Speed USB 2.0 Adapter Card 480MB for PC Windows Connect up to 4 additional USB 1.0/1.1/2.0 peripherals to the computer simultaneously Work fo PC computer with one 32-bit PCI slot - MS Windows 98SE/Me/2000/XP Adds both external and internal USB ports to connect regular external devices or internal or front bay mounted USB peripherals Compliant with PCI revision 2.2 specification Fully compliant with USB 2.0 specifications, with support for transfer rates up to 480 Mbps