Built for reliability and optimized performance, Lenovo introduces the ThinkPad L420 and L520 now available at a low acquisition cost, for ThinkPad corporate users. The ThinkPad L420 and L520 are tested thoroughly to ensure complete functionality at high and low temperatures, humidity, blowing dust, vibration, mechanical shock and thermal shock. In addition to these Military specifi cations, Lenovo pushes the limits with its own internal testing, producing excellent long term value for the customer. The new metal hinge and latch-less design work together seamlessly to provide consistent durability with less breakable parts.