Don't get caught without power again. Keep an extra AC adapter in your notebook bag. That way it's always there and you don't have to remember to unplug the one from your desk before going somewhere. This great accessory works with ThinkPad Z60t and Z60m Series notebooks, as well as the ThinkPad Advanced Mini Dock, ThinkPad Essential Port Replicator, and the ThinkPad External Battery Charger. Type: AC Adapter Compatibility: Compatible with Lenovo 3000 notebooks, ThinkPad T60, X60, and Z60 Series notebooks, ThinkPad Advanced Mini Dock, ThinkPad Essential Port Replicator, and ThinkPad External Battery Charger. AC Adapter Voltage: 20.0 VDC AC Adapter Output Power: 90 W Dimension: 4.96" x 1.97" x 1.18" Weight: 0.79 lbs. Features: Same specifications as the standard 90W AC Adapter that ships with the select ThinkPad and Lenovo 3000 systems. Backed by Lenovo's limited warranty with renowned Service and Support available from IBM Parts: 1 year limited