If youre serious about building gaming PCs, your PCs look is important. The color ring accessory pack, available separately, lets you match your GS Series PSUs accent color to your systems look, & the fan has red, white & blue LEDs (blue only on the GS600) to bathe the inside of your system in soft light. Running in stealth mode? You can turn off the lighting with a hardware switch thats accessible from outside the case. A good gaming power supply must provide the cooling you need when youre pushing it hard, but it should be quiet when youre not. GS Series PSUs accomplish this through excellent efficiency — it generates less heat, so it requires less cooling — & a temperature-controlled 140mm fan that automatically adjusts its speed to meet dem&. It doesnt even spin up until its needed. No matter what your budget, your PCs power supply shouldnt go before its time. GS Series PSUs are built with carefully selected components to deliver a temperature rating of 40° C, for years of service in punishing environments. The fan uses a double ball bearing design to help ensure that it lasts as long as the internal circuitry. GS Series PSUs are build-friendly, with enough connectors to power just about any gaming rig you can imagine, & extra-long cables for full-tower case support & creative cable routing. It fits any ATX PC case, & works with ATX, Micro ATX, Mini ITX, & E-ATX, & all other ATX-compatible motherboards. Technical Specifications A dedicated single +12V rail offers maximum compatibility with the latest components Fanless mode at low loads for quiet operation, with an ultra-quiet 140mm double ball-bearing fan that delivers excellent airflow when needed Color adjustable LED fan can switch between red, blue, white, & off settings by pressing the button on the back (600W model – blue or off mode only) 80 PLUS Bronze certified, delivering up to 85% energy efficiency under real-world load conditions Active Power Factor Correction (PFC) with PF value of 0.99 Universal AC input from 100~240VAV Over-voltage, under-voltage, over-current, & short circuit protection provide maximum safety for your critical system components High-quality capacitors provide uncompromised performance & reliability A three year warranty & lifetime access to Corsairs legendary technical support & customer service Safety Approvals: c TUVus, CE, CB, FCC Class B, Tu V, CCC, C-tick Compatibility Conforms to ATX12V v 2.31 standard, & is backward compatible with the ATX12V 2.2 & ATX12V 2.01 standards