Rosewill HIVE Series Continuous 650W@40°C Power Supply - HIVE-650 Fans: 1x Silent 135mm Fan Main Connector: 20+4Pin +12V Rails: Single PCI-Express Connector: 2 x 6+2-Pin SATA Power Connector: 8 Power Good Signal: 100-500ms Hold-up Time: > 16ms Efficiency: > 82%, Up to 87%