Quick Answer

• Tests 20+4 pin power supply outputs for ATX, ITX, BTX, PCI-E, SATA, and HDD systems.
• Diagnoses voltage levels to ensure stable computer operation.
• Essential tool for PC builders, technicians, and troubleshooting.

What is a Power Supply Tester?

This device is a diagnostic tool designed to check the voltage output of your computer's power supply unit (PSU).

It features a 20+4 pin connector compatible with a wide range of PC power standards including ATX, ITX, BTX, PCI-E, SATA, and HDD interfaces.

By verifying that each voltage rail is within acceptable limits, this tester helps identify potential PSU failures before they cause damage to other components or system instability.

How to Use the Power Supply Tester

Simply plug the tester into the main 20+4 pin ATX power connector of your computer's power supply.

The tester will then illuminate LEDs indicating the status of each voltage output (e.g., +12V, -12V, +5V, -5V, +3.3V, 5VSB, PG). If a voltage is missing or unstable, the corresponding LED will not light up or will flash, signaling a problem.

This straightforward process allows for quick troubleshooting and confirmation of a healthy power supply unit.

Specifications:

• Origin: CN(Origin)
• Compatible Brand/Model: None
• Brand Name: Fasdga

Frequently Asked Questions:

What types of power supplies can this tester check?

This tester is compatible with 20+4 pin power supplies for ATX, ITX, BTX, PCI-E, SATA, and HDD systems.

How does the power supply tester indicate a problem?

The tester uses LED lights to show the status of each voltage rail. If a voltage is missing or unstable, the corresponding LED will not light up or will flash.

Is this tester suitable for beginners?

Yes, the tester is straightforward to use. Simply connect it to the PSU's main 20+4 pin connector, and the LEDs will immediately indicate the voltage status.

What specific voltages does the tester check?

It checks the critical voltage outputs including +12V, -12V, +5V, -5V, +3.3V, 5VSB, and the Power Good (PG) signal.