StarTech.com 4-port PCI Express LP USB Adapter Card - Add 4 USB 2.0 ports to your low profile/small form factor computer through a PCI Express expansion slot - pci express usb 2.0 card - pci-e usb 2.0 card - pcie usb 2.0 card

Backward compatible with USB 1.0/1.1 devices Provide up to 500mA of power per port with dedicated power input 3 external and 1 internal USB 2.0 port High Speed USB 2.0 compliant, with transfer rates up to 480Mbps Includes a full profile installation bracket Plug-and-Play compatible