USB Docking Station Connect up to eight (8) peripherals / One (1) USB Upstream port / Two (2) USB Downstream ports One (1) PS/2 Keyboard port / One (1) PS/2 Mouse port / One (1) USB File Transfer data link port One (1) 9-pin Serial port / One (1) Parallel printer port (standard IEEE 1284 Parallel port) USB self powered / LED indicators