por este dispositivo também tem outras instruções :
Notebooks - ThinkPad T420s (4171) (4.21 mb)
Notebooks - ThinkPad T420s (4171) (4.28 mb)
Notebooks - ThinkPad T420s (4171) (4.08 mb)
Notebooks - ThinkPad T420s (4171) (3.97 mb)
Notebooks - ThinkPad L410 (0616) (2.22 mb)
Notebooks - ThinkPad L410 (2931) (2.22 mb)
Notebooks - ThinkPad L412 (0530) (2.22 mb)
Notebooks - ThinkPad L412 (0553) (2.22 mb)