I am selling my work machine. It is a fully upgraded T420. Here are the specs :
Lenovo ThinkPad T420
i5 2.5, turbo boost to 3.2Ghz
upgraded to 8GB RAM (16 GB max)
upgraded to 160GB Intel 520 SSD
upgraded to 1600x900 230-nit panel
dual HDD/SSD tray included
DVD burner
up to 6 hours battery life