1. Introduction
This manual provides detailed instructions for the safe and effective use of your axGear POWER-TEST-V2 Digital PC Power Supply Tester. This device is designed to quickly and accurately test the voltage output of various PC power supplies, including ATX, BTX, and ITX compliant units. It is an essential tool for diagnosing power supply issues and ensuring the stability of your computer system.
2. Safety Information
- Always ensure the power supply is disconnected from the main power outlet before connecting or disconnecting the tester.
- Do not attempt to open or modify the tester. There are no user-serviceable parts inside.
- Use the tester in a dry environment. Avoid exposure to liquids or excessive humidity.
- Keep the device out of reach of children.
- If the tester shows signs of damage, discontinue use immediately.
3. Package Contents
Verify that all items are present in your package:
- 1 x axGear POWER-TEST-V2 Digital PC Power Supply Tester
4. Product Overview
The axGear POWER-TEST-V2 is a robust voltage tester designed for PC power supplies. It features an LCD display for clear voltage readings and supports various connector types.
Key Features:
- Robust voltage testing for PC power supplies.
- Compatible with ATX, BTX, and ITX power supplies.
- LCD display indicates voltage status.
- Tests power supply to prevent damage to computer equipment.
- No batteries required; powered by the PSU under test.
Connector Types:
The tester supports a wide range of power supply connectors:
- 20/24 Pin (ATX main connector)
- Floppy
- HDD (Molex)
- CDROM
- SATA
- 4pin (P4 CPU connector)
- 8pin (Dual-CPU connector)
- 6pin (PCI-Express graphics card connector)

Figure 4.1: Front view of the axGear Power Supply Tester, displaying various voltage outputs on its LCD screen.

Figure 4.2: Angled view highlighting the LCD display and the main 20/24 pin ATX connector on the right side.

Figure 4.3: Side view illustrating the various peripheral power connectors available for testing, including SATA, Molex, and Floppy.

Figure 4.4: Close-up of the tester's input ports for 4-pin, 6-pin, and 8-pin connectors, along with indicator LEDs for +12V, +3.3V, and +5V.

Figure 4.5: The power supply tester in operation, connected to a power supply's main ATX and CPU cables, displaying voltage readings.
5. Setup
The axGear POWER-TEST-V2 is designed for straightforward setup. No external power source or batteries are required as it draws power directly from the power supply being tested.
- Ensure the PC power supply you intend to test is completely disconnected from any computer components and unplugged from the wall outlet.
- Identify the main 20-pin or 24-pin ATX connector from your power supply.
- Locate the corresponding 20/24 PIN input on the power supply tester.
6. Operating Instructions
Follow these steps to test your power supply:
- With the power supply unplugged, connect the main 20/24 PIN ATX connector from your power supply into the corresponding jack on the axGear POWER-TEST-V2.
- Additionally, connect any other connectors you wish to test (e.g., P4, P6, P8, SATA, HDD, Floppy) into their respective jacks on the tester. It is recommended to connect at least one peripheral connector (like a SATA or Molex) in addition to the main ATX connector for a more comprehensive test.
- Once all desired connectors are securely plugged into the tester, plug the power supply's AC cord into a wall outlet and turn on the power supply (if it has a physical switch).
- The tester will power on automatically. You should hear a single beep sound, and the LCD display will illuminate, showing various voltage readings.
- Observe the LCD display for voltage values. If all voltages are within normal operating ranges and no values are flickering, the power supply output is considered normal.
- To test other connectors, you may need to disconnect the currently tested peripheral connector and plug in another one, then re-power the PSU. The main 20/24 PIN ATX connector should remain connected throughout the testing process.
- After testing, unplug the power supply from the wall outlet before disconnecting the tester.
7. Understanding the Display
The LCD display provides real-time voltage readings for critical power supply rails. Here's a breakdown of the typical readings:
- +12V, -12V, +5V, -5V, +3.3V: These are the primary voltage rails supplied by the power supply.
- +5V Stand by (SB): This indicates the standby voltage, which is always active when the PSU is connected to power.
- Power Good (PG): This value, typically measured in milliseconds (ms), indicates the time it takes for the power supply to stabilize its output voltages after being turned on. A normal PG value is usually between 100ms and 500ms.
Normal voltage tolerances are generally within +/- 5% of the nominal value. For example, a +12V rail should ideally read between 11.4V and 12.6V.
8. Troubleshooting
If you encounter issues during testing, refer to the following:
- Long Buzzer Sound: If you hear a continuous long buzzer sound, it indicates that a certain voltage signal was not detected, or the detected voltage value is outside the normal operating range.
- Flickering Voltage Value or PG: If any corresponding voltage value or the PG (Power Good) reading flickers on the display, it signifies an unstable or failed power supply.
- No Display/No Power: Ensure all connectors are firmly seated. Verify the power supply is plugged into a live outlet and its switch (if any) is in the 'on' position. If still no power, the power supply itself may be completely dead.
- Inaccurate Readings: Double-check all connections. Ensure you are using the correct connectors for the test.
In cases of detected faults (long buzzer or flickering values), the power supply is likely defective and should be replaced to prevent potential damage to computer components.
9. Specifications
| Feature | Detail |
|---|---|
| Device Type | Power Supply Tester |
| Compatible with | ATX, BTX, ITX Power Supplies |
| Voltage Source | 20/24 Pin (ATX connector) |
| Voltage Test Points | +12V, -12V, +5V, -5V, +3.3V, +5V Stand by (SB), 12V Power Good (PG) |
| Supported Connectors | Floppy, HDD (Molex), CDROM, SATA, 4pin (P4), 8pin (Dual-CPU), 6pin (PCI-Express) |
| Display | LCD |
| Dimensions (L x W x H) | 3.8" x 2.5" x 0.8" (97.7 x 63.3 x 20.4 mm) |
| Weight | 3.1 oz (87 g) |
| Model Number | POWER-TEST-V2 |
| UPC | 094276904797 |
10. Maintenance
- Clean the tester with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
- Inspect connectors periodically for any signs of wear or damage.
11. Warranty and Support
For warranty information or technical support, please refer to the retailer or manufacturer's official website where the product was purchased. Keep your proof of purchase for any warranty claims.





