Features Left corner alignment for easy system attachment Step-by-step LEDs and convenient buttons for easy system ejection Standard device ports - 4 USB 2.0 ports, 1 PS/2 port for keyboard or mouse, serial, and parallel Audio/video ports - Microphone in, headphone out, S/PDIF (digital audio), DVI-D, VGA Communication ports - Gigabit Ethernet (RJ-45) and modem (RJ-11) Integrated key lock and optional cable lock slot to secure your ThinkPad notebook and your ThinkPad Advanced Mini Dock 90W AC adapter - Recharges the ThinkPad system battery while fueling all functions of the ThinkPad Advanced Mini Dock And it's backed by a Warranty by Lenovo with renowned Service and Support available from IBM Physical spec Dimension 13.1" x 8.4" x 2.1" Weight 2.09 lbs.