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

It's a nice little device and it works as advertised. Used to check Corsair CX430M, 24 pin connector and 4 pin CPU connector. The case looks like aluminum, the plastic connectors are solid, the LED numbers and indicators are clear, no problem. It runs on external power from your AC adapter, no batteries are required. For the money this is a bargain and perfect for quick measurements. It beeps when expected performance is missing or out of specification. There are no on or off switches, if you don't insert the 20/24 plug you have to use the paper clip trick to push out two pins or the power supply won't turn on.