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Compact PSU tester with backlit LCD screen and multiple connector ports

Rexus

Rexus PST-3 Power Supply Tester with LCD

SKU CH-MN7Z-S60P6 MPN PST-3

Tests 20-pin, 24-pin, SATA, Xeon and PCI-Express connectors with a backlit LCD voltage display

  • DetailsATX PSU each output connectors check Tests 20-pin and 24-pin
  • Key featuresThis product is design with LCD to show your ATX power volta
  • LCD shows exact voltage readings for precise diagnostics
  • Tests 20-pin and 24-pin ATX power supplies
  • Checks SATA and Xeon power connectors
  • Measures Power Good delay to confirm boot readiness
  • Metal housing protects internals during field use

Compact PSU tester with LCD readout

The Rexus PST-3 connects directly to a power supply's output connectors and displays rail voltages on a backlit LCD. It is aimed at system builders and technicians who need a quick pass-or-fail check without a multimeter. The unit fits in a tool bag and requires no external power source to operate.

Fits ATX, EPS and peripheral connectors

The tester accepts 20-pin and 24-pin main power plugs, 4+4-pin CPU connectors, 6-pin PCIe plugs, 4-pin Molex, SATA and 4-pin fan headers. It frees up a bench multimeter and eliminates the need to short the PSU-on pin manually. A metal housing protects the circuitry during transport.

Shows voltage levels and Power Good delay

The LCD reports each rail voltage and the Power Good signal timing in milliseconds. It comfortably handles standard desktop and workstation PSUs using Xeon or SATA power connectors. It does not load the rails, so it cannot reveal voltage drop under load or ripple issues.

How it compares

Measured against everything we stock in PC Repair Tools & Testers, at today’s prices. Recalculated every night.

Price $17.99
Cheaper than about 80% of the 160 comparable items (median $51.49).

New to this? Which coin should you pay with — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameRexus
Model namePST-3
Size & build
Shipping weight0.12 kg
Package size146 × 119 × 27 mm

Questions about this item

Does the PST-3 show the Power Good delay that prevents a system from booting?

Yes, the backlit LCD displays the Power Good value in the lower right corner so you can see the delay between rails stabilising and the PG signal being issued.

What happens to the tester itself if I leave it connected to a supply for hours?

The metal housing keeps the unit cool and rugged during extended sessions, and the compact design stays lightweight for field use.

Which connectors must already be present on my power supply for the PST-3 to test it?

The tester plugs into 20+4-pin ATX, 4+4-pin CPU, 6-pin PCIe, 4-pin Molex, SATA and 4-pin fan outputs, so your PSU needs those headers.

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