Welcome to USB (Universal Serial Bus) 30 universe with this PCI Express card you can easily add 2 USB (Universal Serial Bus) 30 ports to your PC or computer system & achieve transfer speeds up to 48 Gbps That is 10 times faster than with your old USB (Universal Serial Bus) 20! You can also manage large files at blazing speeds The APPPCIE2P3 is easy to install just enter the USB (Universal Serial Bus) 30 PCI Express controller card in a free PCI Express slot of your computer install the included drivers & ready!801 Chipset Compatible with USB (Universal Serial Bus) 20 EHCI & USB (Universal Serial Bus) 11 OHCI USB (Universal Serial Bus) 30 interface (10x faster USB (Universal Serial Bus) 20) Supports 4 USB (Universal Serial Bus) 30 Type ACompatible with PCI-Express Revision 10a Compatible with USB (Universal Serial Bus) 20 & USB (Universal Serial Bus) 11 Transfer rate up to 5 Gbps Plug & Play Supports Hot-Swap 1 free PCI Express slot Operating systems Windows XP VISTA 78 (32 bits & 64 bits)