Add 4 USB 2.0 ports to your low profile/small form factor computer through a PCI Express expansion slot The PEXUSB4DP is a low profile 4 port USB card designed for versatility and performance. Providing simple system expansion for added peripheral connections, this PCI Express USB card adds 3 external USB 2.0 slots and 1 internal USB 2.0 slot, with support for high speed USB 2.0 data transfer rates of up to 480 Mbps, and includes WHQL certified drivers and easy plug and play installation. Capable of adapting to virtually any PC case form factor, the low profile USB card includes a standard profile bracket for installation in full form factor cases. The StarTech.com Advantage - Add 4 USB 2.0 ports to a low profile/small form factor (SFF) computer system, to conserve expansion port availability - Dedicated power input ensures each port receives the full amount of power capable under USB 2.0 specification - Backed by a StarTech.com 2-year warranty and free lifetime technical support | StarTech.com 4 Port Pci Express Low Profile High Speed Usb Card in Green