Used - Good: ThinkPad Laptop T Series Intel Core i5 2nd Gen 2520M (2.50GHz) 4GB Memory 500GB HDD NVIDIA NVS 4200M + Intel HD Graphics 3000 15.6" Windows 7 Professional 64-bit T520 (424049U) - Newegg.com
Refurbished: Lenovo Thinkpad T520 - i5 2.5GHz - 8gb - 320gb HD - - 15.6" Screen - Webcam- Win 10 Pro 64 - 1 YEAR WARRANTY - Newegg.com
Lenovo ThinkPad T420 Review: Kickin' It Old School - PC Perspective