Adaptec AUA-5100 USB 2.0 6 Port (5 external, 1 internal) Card Connect high-speed USB 2.0 devices to your computer with this 6-port (5 external, 1 internal) card Fully compatible with USB 1.1 Includes USB 2.0 drivers for Windows operating systems Only five of the six ports can be used simultaneously. Set jumpers internally to select the internal or one of external ports 5-year warranty