Hewlett Packard 230W Docking Station A7E34 for Select EliteBook and Probook Models 4 x USB 3.0 1 x VGA, 1 x DisplayPort, 1 x DVI-D 2 x PS/2, 1 x Serial Port, 1 x Parallel Port, 1 x RJ-45 Includes 230W power supply Compatible with HP ProBook b-Series Notebook PCs, HP EliteBook 8xxx p Series Notebook PCs, and HP EliteBook 8xxx w Series Mobile Workstations