TDK-Lambda CUS250M 250W AC-DC Power Supplies are compact power supplies packaged in the industry 2×4″ footprint. These Power supplies can deliver 250W with forced air or conduction cooling in ambient temperatures up to 50°C. TDK-Lambda CUS250M 250W AC-DC Power Supplies options include a 5V standby voltage, remote on/off DC_OK, and AC_Fail signals, with a U channel, cover, or top fan mechanical construction.