HP 497652-001 HSTNN-S01X USB 2.0 Docking Station for EliteBooks & Notebooks (1) USB 2.0 upstream; (4) USB 2.0 downstream Ethernet RJ-45 External monitor port (VGA Analog RGB D-sub15pin) External monitor port (DVI-D) Audio-out (headphone) jack; Audio-in (microphone) jack