Dell 430-3312 E-Port Plus Port Replicator w/ 210W AC Compatibility: This docking station is compatible with the following systems: Latitude E5510, E5520, E6220, E6320 Precision M4400, M4500, M4700, M6400, M6500, M6600, M6700 Ports Spec: 1 x serial - RS-232 - 9 pin D-Sub (DB-9) 1 x parallel - 25 pin D-Sub (DB-25) 1 x keyboard - generic - 6 pin mini-DIN (PS/2 style) 2 x USB - 4 pin USB Type A 1 x network - RJ-45 1 x display / video - VGA - 15 pin HD D-Sub (HD-15) 2 x display / video - DVI-Digital - 24 pin digital DVI 2 x display / video - 20 pin DisplayPort 1 x mouse - generic - 6 pin mini-DIN (PS/2 style) Audio Electrical Outlet Plug Type: Office Products