por este dispositivo também tem outras instruções :
Notebooks - ThinkPad T420s (4175) (4.21 mb)
Notebooks - ThinkPad T420s (4175) (4.28 mb)
Notebooks - ThinkPad T420s (4175) (4.08 mb)
Notebooks - ThinkPad T420s (4175) (3.97 mb)
Dispositivos de Entrada - USB Keyboards (0A36328 - Cherry Smartcard Keyboard from Lenovo (U.S. English)) (637.5 kb)
Dispositivos de Entrada - USB Keyboards (0A36410 - Lenovo USB Smartcard Keyboard - Arabic (ID 470)) (637.5 kb)
Dispositivos de Entrada - USB Keyboards (51J0155 ) (637.5 kb)
Dispositivos de Entrada - USB Keyboards (51J0156 ) (637.5 kb)