Need an AC adapter for IBM Laptops/Notebooks with the following model numbers: R60, T60, X60, Z60, Z61; Lenovo 3000 C100, N100, V100 series? BTI has you covered with our premium 19V, 65W replacement power adapter. This product has been engineered to meet or exceed the original manufacturer's specifications and replaces the original IBM part numbers 40Y6793, 42T5243, 92P1125, 92P1126. All BTI power adapters are manufactured and tested under our stringent quality standards and come with an industry leading 24 month manufacturer's warranty. BTI... True to the original.