He perfectly fulfilled his duties for months, the cables were well provided for the connection screen + CPU. Until one day ... nothing! The UPS was turned off completely; no LED on, no current transmitted to the PC ... I consulted the manual, I changed the course fuse (2nd one is provided) - knowing that the old fuse was "clear," in good condition. Always nothing. It is still under warranty ... I will ask repair or replacement! On the advice of the record, I contact Trust, the manufacturer, to expose my problem. They reply within 24 hours, directing me to my dealer. So I contacted Amazon, which meets in the half-day (the longest was finding the contact module on their website). Quick and immediate: they control me another, which I received in 3 days, and give me a return label to return the defective inverter free.
In short, a service Amazon at the top. In contrast; the failure of the inverter, I do not know if this is common or if it is exceptional on my own. Anyway luckily he did not go out for an important work ... a UPS is still made to keep a PC turned on!