The ThinkPad Mini Dock Series 3 is ideal for notebook users who need easy access to the Internet/ LAN, multiple USB devices, audio and video equipment, and robust key lock security. Features & Benefits: - Left corner alignment for easy system attachment - Convenient eject button for one-step system removal - Six USB 2.0 ports - Multiple video ports: 1 VGA monitor, 1 DVI, 1 DisplayPort (Note that the video controller allows for any two video ports to be used simultaneously) - Audio ports: Analog microphone in, headphone out - RJ-45 Ethernet port - Integrated key lock and cable lock slot for physical security - Ships with a 90W AC adapter - Backed by a one-year warranty The ThinkPad Mini Dock Series 3 is compatible with ThinkPad T400s notebooks. It does not support earlier ThinkPad models.