... Swithching Power Supply 2, 110/220V input, OMKQN 3, Installed with EMI filter, minimum wave 4, 2 years warranty Warmly welcome ... info for my OMKQN 110V/220V Input 350W Single Output Switching Power Supply S-350 series. Hope you like it.First, the specification ... time warranty, during the warranty, anything wrong with it, like no working,an unstable output voltage or current, damaged, my corporation will ...