Rosewill Valens Series 500W Power Supply, 80 PLUS Gold Certified, Single +12V Rail, Intel 4th Gen CPU Ready, SLI & Crossfire Ready - Valens-500 Fans: 1 x Long lasting, ultra-quiet 120mm hydraulic fan Main Connector: 20+4Pin +12V Rails: Single PCI-Express Connector: 2 x 6+2-Pin SATA Power Connector: 5 Power Good Signal: 100-500ms Hold-up Time: 16ms min. Efficiency: > 90%, Up to 92%