Flex atx power supply 550w psu. Standard flex atx form factor size suitable for micro atx case and mini itx pc case. Full voltage 110/220v. widely used in places with unstable voltage, and has the function of automatically protecting computers. Fully modular design makes wiring easier. Active PFC type,stable & safe output, multiple protection including OVP, UVP, OCP, OPP, SCP and OTP.