4GB Team High Performance Memory RAM Upgrade Single Stick For Lenovo ThinkPad R400 Series R500 Series L aptop. The Memory Kit comes with Life Time Warranty. at Amazon.com
Amazon.com: CERRXIAN 6.5ft 100W PD USB Type C Male Input to DC 7.9 x 5.5mm Male Power Charging Cable for Compatible with Lenovo Thinkpad T400 T410 T420 T420s T500 T520 T530 E545
Amazon.com: GHU New Battery 48 WH Replacement for 33+ 41U3198 43r2499 42t4531 42T4644 Compatible with Lenovo Thinkpad R400 T400 14-inch 42T5263 42T5229 42T4677 42T5225 42T5229 42T5262 42T5264 : Electronics