Laptop/Notebook AC Adapter/Power Supply Charger+Cord for IBM ThinkPad A20 A20m A21 A21e A21m A22 A22m A22p A30 A30p A31 A31p R30 R31 R32 R40 R40e R41 R50 R50e R50p R51 R51e R52 T20 T21 T22 T23 T30 T31 T33 T40 T40p T41 T41p T42 T42p T43 T43p t2x t4