Ultra Products (ULT31553) 400-Watt Power Supply

Price range: $19.99 - $19.99 Bench testing a power supply is now simple and comprehensive with Ultra's power supply tester. Accepting either 20-pin or 24-pin ATX connectors and either 4-pin or 8-pin CPU power connectors, there are test ports for floppy connectors, drive connectors, even SATA and PCI-e! An audible beep tells you if your power supply is powered up and a green LED lights up for each live rail of the power supply. A must for any do-it-yourself PC builder.