... detailed info for my OMKQN 110V/220V Input 350W Single Output Switching Power Supply S-350 series. Hope you like it.First, ... warranty, anything wrong with it, like no working,an unstable output voltage or current, damaged, my corporation will be responsible to ... choosing the right power supply, please do not hesitate to contact us. OMKQN 110V/220V Input 350W Single Output Switching Power Supply S-350 ...