For the technically inclined, Corsair 400W 80-PLUS Certified Power Supply for $29.99 shipped after a $20 rebate. Here is a screenshot for your reference. It supports the ATX12-Volt v2.2 standards and is 80 Plus certified. The cables are fully sleeved for easy routing and bundling and a PCIe power connector is provided. There are also 6 x SATA and 6 x Molex connectors, along with a 120mm double ball-bearing fan. It usually goes for over $50.