Review on 💻 Optimal Shop 20+4 Pin LCD Computer Power Supply Tester - Reliable SATA IDE HDD ATX ITX BYI-Black by Ernest Etienne

Provides digital reading of voltage from power supply, has connectors on all 4 sides for different cables. Great for identifying disconnected or faulty power supplies. Normally, computer power supplies either run at the correct voltage or they don't. It is fairly rare for a power supply to drop under load or fail after it has been working well.