The Thermaltake Dr. Power II Universal ATX Power Supply Tester makes testing a PSU simple and easy. The Dr. Power II has been designed to support every ATX power supply available today. Dr. Power II includes an oversized LCD panel to show the values of each rail tested. There are connections for the 24-pin motherboard connector, 8 pin CPU connector, molex connector, SATA connector, and 8 pin PCI-E connector. This means that there is accurate voltage indicating for the +12V/+5V/+3.3V/5VSB/-12V rails. Inside are built-in PG alarm systems that will signal in low-voltage, high-voltage, and no voltage situations.