Designed exclusively for ultraslim HP EliteBook Notebook PCs, the HP UltraSlim Docking Station expands display, network, and device connectivity so you can be more productive throughout the day, all through a simple one-click slide- in side dock. Features: Four USB 3.0 ports offer high-speed connectivity to the USB devices you use most. USB 3.0 reduces the time required for data transmission (vs. USB 2.0)1, is backward compatible with USB 2.0, and is bi-directional. DisplayPort and VGA ports deliver legacy and future compatibility with your choice of video devices and an Ethernet/LAN port keeps you online. Headphone and microphone jacks support your multimedia and video conferencing requirements.Compatible with these HP laptops:HP Elitebook 820 G1,G2,G3 Notebook PCHP Elitebook 840 G1,G2,G3 Notebook PCHP Elitebook 850 G1,G2,G3 Notebook PCHP EliteBook Folio 9470m Notebook PCHP EliteBook Folio 1040 G1 Notebook PCHP EliteBook Revolve 810 G1TabletHP EliteBook Revolve 810 G2 TabletHP ZBook 14 Mobile Workstation Used, tested & 100% working. In good cosmetic condition with minor scuffs, scratches and dings consistent with normal use. Does not come with AC power adapter. Comes with a 30-day guarantee.