Compatibility Information | Designed For | ThinkPad 130 ¦ IBM ThinkPad A21e 2655 ¦ IBM ThinkPad A22e ¦ IBM ThinkPad i Series 1200 ¦ IBM ThinkPad i Series 1300 ¦ IBM ThinkPad R30 ¦ IBM ThinkPad TransNote ¦ IBM ThinkPad X20 ¦ IBM ThinkPad X21 ¦ IBM ThinkPad X22 ¦ IBM ThinkPad X23 ¦ Lenovo ThinkPad X24 |