[mathieuruellan]

I bought a TP s540 3 years ago, and a few days after the end of the warranty, the motherboard died. Lenovo was ok to replace it for free. 3 months after, the motherboard died again and this time, no free replacement. The s540 was really cheaper, but without 3y warranty, without full mil-specs. If you want reliability, choose T/X series. 3Y warranty on site is already included, a proof they trust these products. If you add the optional warranty on cheaper products, the price is higher than equivalent on T series.