• 8-in-1 ATX Power Supply Tester - Support test 20 pin IDE / 24 pin IDE / HDD / Floppy 4 pin / PCIe 6 pin / 4 pin / 8 pin / SATA connectors.
• Aluminum Alloy Enclosure Light and easy to carry, great thermal conductivity, high strength, and corrosion resistance.
• Beep Alarm - When your power supply test value is beyond normal range, the power supply tester would issue a buzzer alarm.
• 1.8” LCD Screen - Output voltages show on the 1.8” LCD screen, easy to read, the 1.8” screen is powered by 20 pin / 24 pin connector.

• Robust Voltage Tester for PC Power Supply
• Easy to Read Digital LCD Display
• Test ATX Power Supply with Ease
• Made Out of Aluminum Casing Accurate Voltage Indicator +/- 0.1V (+12V1 / +5V / +3.3V / 5VSB / +12V2 / -12V)
• ATX P.G. Value Display
• Lower or Higher P.G. Values Alarm
• ATX Output Connector’s Check
• Lower Voltage Detection Alarm
• Over Voltage Alarm
• No Voltage Detection Alarm

Insert the power 20-pin or 24-pin and P4, P6 or P8 plug into the corresponding position of the power tester. If 20-pin or 24-pin connector sets off an alarm and displays “LL”, it needs to plug in 4P connector.

1. Turn on the power supply, at the same time, and there will be two beeps. If the values of each group do not flash, it indicates that the power input of this power supply is normal.
2. The voltage of IDE / SATA / P6 / P8 interface is displayed by the three lights on the left of the power tester. If their voltage is normal, the three groups of lights (+ 12V, + 3.3, + 5V) will be on. If the light is not on, it indicates that the interface line group is faulty.
3. If the voltage signal of a circuit is not detected (such as 20-pin or 24-pin connector) or the detected voltage exceeds the normal range, the tester will send out a warning sound of two beeps for a long time, and the corresponding voltage or PG value display status is flashing state, it means that the power supply is a fault source!
4. Special reminder: The power supply tester does not support hot-plug

Ensure your PC power supply is working safely and efficiently with the Kingwin KPST-01 Power Supply Tester. This compact diagnostic tool is designed for accurate voltage testing of ATX, ITX, SATA, IDE, and PCI-E connectors, making it the perfect companion for system builders, IT professionals, and DIY computer enthusiasts.

Equipped with a bright digital LCD screen, the KPST-01 instantly displays real-time voltage readings for all major power rails, including +12V, -12V, +5V, -5V, +3.3V, and 5VSB. Detect faulty power supplies before they damage your system — no software, batteries, or guesswork. Just plug in your 20-pin or 24-pin PSU connector, and you're ready to go.

Whether you're building a new PC, diagnosing issues with a desktop power supply, or maintaining a fleet of machines, the Kingwin Power Supply Tester KPST-01 is an indispensable tool that combines functionality, portability, and precision.

? Universal PSU Compatibility – Supports ATX, ITX, SATA, IDE, HDD, PCI-E, and 20/24-pin connectors; ideal for testing standard desktop power supplies.

? Clear Digital LCD Display – Instantly view real-time voltage readouts on an easy-to-read screen; quickly identify abnormal values or PSU failures.

? Efficient Power Supply Diagnosis – Accurately detect faults in +12V, -12V, +5V, -5V, +3.3V, and 5VSB rails to help prevent hardware damage.

? Plug-and-Play Design – No software required; simply connect your PSU cables and get immediate results on functionality and voltage stability.

? Essential PC Repair Tool – Perfect for system builders, technicians, and DIY PC enthusiasts looking to troubleshoot and maintain power supplies.