The CUL-series is a semi-modular power supply that lets you select the cables you need while powering your gaming system with a 140mm Blue LED cooling fan and 6 pin PCI-E ready. **850W & 950W is offering 140mm Blue LED cooling fan & Dual 6+2 PCI-E ready. Everyone likes a clean and easy installation. This power supply allows you to keep what you want and remove what you don't. While necessary connectors, like the 20+4 pin power & 4+4 pin CPU connector are attached to the unit, you decide which of the others should stay. Customize your power supply to reflect your system.