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Small rectangular LCD PSU tester with 20+4 pin, SATA and PCIE connectors

SMUGDESK

SMUGDESK 20+4 Pin LCD PSU Tester SATA 24 Pin

SKU CH-X79J-YNJ35

Tests ATX, ITX and BTX power supplies with 20 or 24 pin connectors, plus SATA and HDD ports, showing real-time voltage readings on an LCD screen

  • Tests ATX, ITX, BTX power supplies with 20+4 pin connector
  • Checks PCIE, SATA and HDD rails for voltage stability
  • Clear LCD shows real-time readings for instant diagnosis
  • True plug-and-play — no drivers or software required
  • Compact portable design suits PC building and repair work

PSU Tester for ATX ITX BTX Builders

The SMUGDESK 20+4 pin LCD power supply tester checks desktop PSU voltage rails before installation. It fits both 20pin and 24pin main connectors plus PCIE, SATA and HDD power plugs. Technicians and DIY builders use it to confirm stable output and protect expensive components. No software or drivers are required for immediate readings.

Verify Connector Types Before Testing

Ensure the power supply under test uses standard ATX, ITX or BTX main power connectors matching the 20+4 pin interface. Confirm that PCIE, SATA and HDD peripheral leads are present if you need to check those rails. The tester draws power directly from the PSU so no external supply or battery is needed for operation.

Instant Voltage Readout on LCD Screen

The built‑in LCD displays realtime voltage values for each monitored rail during normal use. The unit runs passively with no fan, so it adds no audible noise to the workbench. Power draw is limited to the tester’s own circuitry, keeping load on the PSU minimal while diagnostics are performed.

How it compares

Measured against everything we stock in Multimeters & Electrical Testers, at today’s prices. Recalculated every night.

Price $13.99
Cheaper than about 93% of the 971 comparable items (median $30.99).

Specifications

No published specifications for this item yet.

Questions about this item

Does the tester come with any cables or do I need to supply my own ATX and SATA leads?

The unit has built-in 20+4 pin, PCIe, SATA and HDD sockets so you simply plug the power supply directly into the tester; no separate cables are required.

Should I choose a 20 pin or 24 pin version for a modern ATX motherboard?

This single tester covers both standards because the 20+4 pin connector splits to fit either a 20 pin or a 24 pin motherboard socket.

What does the LCD actually show when I connect a power supply?

The screen displays real-time voltage readings for each monitored rail, letting you spot over-voltage, under-voltage or unstable output instantly.

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