Belkin Hi-Speed USB 2.0 5-Port PCI Card Adds 5 USB 2.0 high-speed ports to your computer--4 external and 1 internal (for future internal products) Offers backward-compatibility with USB 1.1 devices Provides data-transfer speeds of up to 480Mbps Supports up to 127 high-speed devices and 254 full-/low-speed devices from 5 ports Installs with Plug-and-Play ease