This PSUs motherboard connector includes a 4pin sense wire that needs to be connected to the PSUs modular interface as shown. Sense wire helps improve PSUs regulation performance by around 1%-2%. High efficiency with 80 PLUS Gold certification24/7 continuous power output with 40 operating temperatureClass-leading single +12V railSilent running 120mm FDB fan with 18 dBA minimumJapanese electrolytic capacitorsSpecially designed cover increases effectiveness of residual heat dissipationCompact design with a 140mm depth for easy integrationStrict 3% voltage regulation and low ripple & noise