The power supply and fan specialists from be quiet! a small stroke of genius has succeeded. After all, with the latest expansion stage 11 of the Straight Power series , a power supply has been presented that is more than just a new revision with smaller detail improvements. be quiet! has once again brought a product onto the market that has been significantly upgraded in terms of efficiency, layout and variety of connections - and it runs whisper-quiet again.The features of the Straight Power 11 550W at a glance: Complete modular cable management New half-bridge with LLC resonant converters for higher performance Four high performance 12V lines Higher efficiency with 105 degree Celsius electrolytic capacitors and solid capacitors Ultra-quiet 135mm Silent Wings 3 fan 80 PLUS Platinum certified Fully modular cable management Five year manufacturer