[UL Listed] iTEKIRO 65W AC Adapter for Thinkpad E455 E460 E465 E470 E475 E531 E540 E550 E555 E560 E565 E570 E575 L440 L450 L460 L470 L540 L560 L570 P40 P50s P51s S431 T431S T450 T450s T550 T560 T570

Disconnect the AC adapter from the computer. Power on the system and continuously tap F1 to enter the BIOS. If you receive a general help window, press ENTER to continue. Use the right arrow key to select the configuration menu. Use the down arrow key to highlight the power menu, and press enter. The power sub-menu will be displayed. Use the down arrow keys to highlight the disable built in battery option, and press ENTER. Assure that ‘yes’ is highlighted and press ENTER again to power off the system. Allow your system three to five minutes to cool before you open up the cover. Loosen three captive screws from the DIMM Door. Grasp the cover at the access notch, and lift the cover to release the clips and remove the cover. Remove four screws. Lift the drive slightly, then pull to disconnect, and remove the hard disk drive from its bay. Remove the rubber bumper from the drive. Uninstall t