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) With this PCI Express card you can easily add 4 USB30 ports to your computer or computer system & achieve transfer speeds up to 5 Gbps& Ccedil; which is 10 times faster than with your old USB20 You can also manage large files at blazing speeds The APPPCIE4P is easy to install just enter the PCI Express USB30 controller card into a free PCI Express slot on your computer install the drivers included & Ready!