HP VB044AV Compaq Elitebook Probook 8440p 8540p 8770W Docking Station EXCL PSU
3 x USB 2.0, 4-pin connector. 1 x Audio - line - in - mini - phone 3.5 mm. 1 x headphone output - mini-phone stereo 3.5 mm. 1 x Display Video - VGA - HD D-Sub (HD-15), 15-pin. 1 x Display Video - DisplayPort - 20-pin DisplayPort.