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. Compatibility: EliteBook 720 G1-G2, 725 G2-G4, 740 G1-G2, 745 G2-G4, 750 G1-G2, 755 G2-G4, 820 G1-G4, 840 G1-G4, 850 G1-G4, 1020 G1, 1040 G1-G3; EliteBook Folio 9480m, 9470m; EliteBook Revolve 810 G1, 810 G3; Pro x2 612 G1; ProBook 640 G2-G3; ZBook 14; ZBook 14u G4; ZBook 15U G3-G4 Mobile Workstation. - This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com - 4 x SuperSpeed USB 3.0 - 20 pin DisplayPort - 1 x network - Ethernet - 1 x display / video - VGA - 15 pin D