A second AC Adapter provides power convenience when you need it. The ThinkPad 56W Ultraportable AC Adapter can be used with X30 and X40 Series ThinkPads, the ThinkPad Port Replicator II, and the ThinkPad Multiple Battery Charger II. Spare adapters at home, work and for travel make power access convenient and tailored to your needs.
Features
Voltage: AC 110/240 V
Power: 56 Watt
Compatibility: Lenovo ThinkPad X40, ThinkPad X40
Lenovo ThinkPad Ultraportable AC Adapter Specifications
Part # 02K6880
1.800.814.5410 
858.764.8900 Mon-Fri 6AM-4PM PT
