Kingwin Digital LCD Power Supply Alternatives: 6 Similar Picks Compared

How these testers differ from Kingwin

Optimal Shop 20+4 Pin LCD Power Supply Tester

The Optimal Shop 20+4 Pin model measures 8.3 inches long, making it significantly larger than the Kingwin KPST-01. It weighs 3.2 ounces and features an aluminum construction for durability. While the Kingwin focuses on a compact 6 cubic inch footprint, this unit prioritizes robust build quality for multi-connector verification. It suits users who value a sturdier tool over minimal storage space. The LCD display provides similar voltage readouts, but the larger form factor allows for better heat dissipation during extended testing sessions. Choose this if you need a premium, durable tester for frequent use.

Optimal Shop LCD ATX Power Supply Tester

This Optimal Shop variant shares the same brand heritage but differs in physical appearance with a golden color finish. Like the previous option, it is designed for technicians needing durable, multi-connector voltage testing. It lacks specific dimension data in the provided specs, but its rugged design suggests a focus on longevity rather than compactness. It fits users who prioritize connector compatibility and build resilience. The LCD display ensures clear voltage monitoring, similar to the Kingwin, but the aesthetic and construction materials offer a different tactile experience. Select this model if you prefer a distinct visual style and confirmed durability for professional repair environments.

Comidox 20/24 Pin LCD Power Supply Tester

The Comidox tester measures 4.95 by 2.51 by 0.72 inches, offering a different profile compared to the Kingwin. It includes audible alarms alongside its LCD screen, providing an additional diagnostic layer the Kingwin does not explicitly list. This feature helps users quickly identify faults without constant visual monitoring. It is best for verifying ATX-family power supply voltages with a focus on immediate feedback. The black color matches the Kingwin, but the inclusion of sound alerts makes it a more comprehensive tool for rapid troubleshooting. Pick this if you want audible confirmation of voltage issues in addition to digital readouts.

ASHATA ATX LCD Power Supply Tester

The ASHATA ATX tester weighs 2.82 ounces and measures 3.94 by 1.97 by 0.79 inches. It provides precise voltage monitoring with audible alerts, combining visual and audio feedback. This makes it suitable for users who need real-time data for common connector types during maintenance. While the Kingwin relies on visual LCD readouts, this unit adds sound for quicker fault detection. It is a practical choice for standard ATX power supplies. Choose this model if you prefer a lightweight tool that offers both visual and auditory warnings for voltage irregularities, enhancing the diagnostic process beyond simple display readings.

ASHATA LCD Power Supply Tester

This ASHATA 24-Pin LCD PSU Tester shares identical dimensions and weight with the previous ASHATA model. It is designed for quick main rail voltage checks, offering a practical alternative to multimeter setups. The focus is on fast, visual confirmation of main rail voltages, which aligns with the Kingwin’s purpose but simplifies the interface for basic checks. It fits builders who want to skip complex setup for routine verification. The LCD display provides the necessary data, but the tool is streamlined for speed. Select this if you need a dedicated, straightforward tester for verifying main power rails without extra features or complexity.

JacobsParts 20/24-Pin LCD Power Supply Tester

The JacobsParts tester weighs 3.53 ounces and is designed for basic ATX voltage verification. It is a focused tool that checks standard ATX voltages without extra features. This simplicity makes it suitable for users who need basic rail verification without additional complexity. While the Kingwin offers a more comprehensive feature set, this model provides a no-frills approach to PSU testing. The black color is consistent with many testers in this category. Choose this if you require a simple, reliable tool for checking standard ATX voltages and do not need advanced diagnostic features or multi-connector support.

Quick picks

Our 7 picks

1 Best overall

Kingwin Digital LCD Power Supply Tester

Best for: Verifying voltage rails on ATX and ITX PSUs

Form Factor

ATX

Device Compatibility

PCs

Display Type

LCD Display

Dimensions

3 × 2 × 1 inches

View on Amazon: Kingwin Digital LCD Power Supply Tester Affiliate link

The Kingwin KPST-01 is a compact power supply tester featuring a digital LCD display. It supports ATX, ITX, IDE, HDD, SATA, and BTX form factors. The device provides real-time voltage readouts for +12V, +5V, and +3.3V rails. Its plug-and-play design requires no advanced technical knowledge. This tool helps you quickly identify faulty power supplies and prevent component damage.

Pros

• Digital LCD screen shows real-time voltage levels
• Supports ATX, ITX, IDE, SATA, and BTX connectors
• Measures +12V, +5V, and +3.3V rails accurately
• Compact dimensions of 3 x 2 x 1 inches

Cons

• Only tests voltage rails, not current or wattage
• Does not include a carrying case in the data
• Limited to standard desktop power supply testing

Good fit if

• You need to check voltage stability on multiple PSU types
• You want a compact tool that fits in a small bag
• You prefer visual LCD readouts over LED indicators

Skip if

• You require testing for server-grade or high-wattage units
• You need to measure current draw or power consumption
• You prefer analog meters over digital displays

Verdict: Kingwin KPST-01 Digital LCD PSU Tester is a practical choice for technicians who need to verify voltage rails on standard ATX and ITX units quickly. Its small size makes it easy to store.

2 Best premium

Optimal Shop 20+4 Pin LCD Power Supply Tester

Best for: multi-connector power supply verification

Form Factor

ATX

Display Type

LCD Display

Dimensions

8.3 × 3.7 × 0.8 inches

Weight

3.2 ounces

View on Amazon: Optimal Shop 20+4 Pin LCD Power Supply Tester Affiliate link

This Optimal Shop tester checks 20+4 pin ATX connectors and auxiliary outputs like SATA and PCIe. Its 1.8-inch LCD screen shows voltages, and a buzzer alerts you to PG signal issues. The aluminum alloy shell keeps it light at 3.2 ounces. It suits users who need a compact, durable tool for verifying power supply stability across multiple connector types.

Pros

• Tests 8 connector types including 20/24-pin ATX, SATA, and PCIe
• 1.8-inch LCD screen displays output voltage clearly
• Aluminum alloy shell offers high strength and corrosion resistance
• Built-in buzzer alarms when PG signal fails

Cons

• Screen is prone to scratches and requires removing a protective film
• LCD display is powered by the tested connector, limiting standalone use
• Small 1.8-inch screen may be harder to read for some users

Good fit if

• You need to test multiple connector types like SATA and PCIe
• You prefer a durable aluminum alloy build over plastic
• You want audible alerts for power signal failures

Skip if

• You need a large, easy-to-read display for quick checks
• You want a device that works without being plugged into a PSU
• You prefer a simple plastic housing that is less likely to scratch

Verdict: Optimal Shop 20+4 Pin ATX Tester is a compact, durable tool for verifying power supply outputs across various connectors. It fits users who value aluminum construction and multi-connector testing in a small form factor.

3 Also great

Optimal Shop LCD ATX Power Supply Tester

Best for: Technicians needing durable, multi-connector voltage testing

Form Factor

ATX

Display Type

LCD Display

View on Amazon: Optimal Shop LCD ATX Power Supply Tester Affiliate link

This Optimal Shop tester supports 8-in-1 ATX connectors, including 20/24-pin, SATA, and PCIe. It features a 1.8-inch LCD screen powered by the connector to display output voltages. An aluminum alloy shell ensures durability and heat resistance. A buzzer alarm alerts you to PG signal failures. It is ideal for technicians who need a portable, rugged tool for checking ATX, ITX, and BTX power supplies.

Pros

• Supports 8 connector types including 20/24-pin, SATA, and PCIe
• 1.8-inch LCD screen displays output voltages clearly
• Aluminum alloy shell offers high strength and corrosion resistance
• Built-in buzzer alarm signals PG number failures

Cons

• 1.8-inch LCD screen is small and prone to scratching
• Protective film must be removed for clear viewing
• Only tests voltage and PG signal, not load stability

Good fit if

• You need a durable aluminum tester for field work
• You frequently test multiple connector types like SATA and PCIe
• You want a simple tool with clear voltage readouts

Skip if

• You require a large, high-resolution display for easy reading
• You need to test under load conditions
• You prefer a plastic casing to reduce weight

Verdict: Optimal Shop 20+4 Pin LCD PSU Tester is a rugged choice for technicians who prioritize durability and connector compatibility over screen size. It fits users who need a reliable, portable tool for quick voltage checks on various ATX and PCIe connectors.

4 Best budget

Comidox 20/24 Pin LCD Power Supply Tester

Best for: Verifying ATX-family power supply voltages

Form Factor

ATX

Device Compatibility

PCs

Display Type

LCD Display

View on Amazon: Comidox 20/24 Pin LCD Power Supply Tester Affiliate link

This Comidox tester checks ATX, BTX, ITX, and TFX power supplies via a 20- or 24-pin connector. The LCD screen shows voltage readings for 3.3V, 5V, 12V, -12V, SB+5V, and PG with 0.01V accuracy. It also indicates SATA, IDE, 4-pin, 8-pin, and 6-pin PCIe outputs. An automatic buzzer warns you when values exceed normal limits. It is a compact tool for verifying PSU health.

Pros

• LCD displays voltage for 3.3V, 5V, 12V, -12V, SB+5V, and PG
• Indicates SATA, IDE, 4-pin, 8-pin, and 6-pin PCIe outputs
• Buzzer sounds when voltage exceeds normal values
• Compact size of 4.95x2.51x0.72 inches

Cons

• Only shows LCD voltage for 20-pin or 24-pin connectors
• Does not display voltage for external 4-pin, 6-pin, or 8-pin cables
• Limited to standard ATX family form factors

Good fit if

• You need to verify ATX, BTX, ITX, or TFX power supply voltages
• You want automatic buzzer alerts for abnormal readings
• You require precise 0.01V voltage display accuracy

Skip if

• You need to test non-ATX power supply standards
• You require voltage readings for individual PCIe or SATA cables
• You prefer a tester with a larger display screen

Verdict: Comidox ATX/ITX Power Supply Tester with LCD provides accurate voltage checks for standard ATX-family units. It fits users who need to quickly verify PSU health with audible alarms and precise digital readings.

5 Also great

ASHATA ATX LCD Power Supply Tester

Best for: Real-time voltage monitoring with audible alerts

Form Factor

ATX

Device Compatibility

PCs

Display Type

LCD Display

Dimensions

3.94 × 1.97 × 0.79 inches

Weight

2.82 ounces

View on Amazon: ASHATA ATX LCD Power Supply Tester Affiliate link

This ASHATA power supply tester features an intelligent LCD display that shows real-time voltage readings for +12V, -12V, +5V, -5V, +3.3V, SB, and PG signals. It measures voltage with 0.01V precision and triggers a buzzer alarm when parameters fall outside normal ranges. The device supports 20/24-pin ATX, SATA, 4/8-pin, and 6-pin PCI-E connectors. It is lightweight and designed for quick maintenance tasks.

Pros

• Intelligent LCD displays key voltage parameters in real-time
• Built-in buzzer alarm triggers for abnormal voltage readings
• Measures voltage with 0.01V precision
• Supports 20/24-pin ATX, SATA, 4/8-pin, and 6-pin PCI-E interfaces

Cons

• No app or remote control for monitoring
• Lacks a built-in battery for standalone operation
• Small display limits readability in low light

Good fit if

• You need precise voltage readings for ATX power supplies
• You want audible alerts for faulty outputs
• You test multiple connector types regularly

Skip if

• You require wireless connectivity for monitoring
• You prefer a larger display for better visibility
• You need a tester with built-in battery power

Verdict: ASHATA ATX PSU Tester with LCD provides precise voltage monitoring and audible alerts for standard ATX power supplies. It suits users who need reliable, real-time data for common connector types during maintenance.

6 Also great

ASHATA LCD Power Supply Tester

Best for: Quick main rail voltage checks

Form Factor

ATX

Device Compatibility

PCs

Display Type

LCD Display

Dimensions

3.94 × 1.97 × 0.79 inches

Weight

2.82 ounces

View on Amazon: ASHATA LCD Power Supply Tester Affiliate link

This ASHATA tester checks ATX, ITX, BTX, and TFX power supplies via the main 20- or 24-pin connector. It shows voltage readings to 0.01V on an LCD screen and sounds a buzzer when values are normal. The unit is small, measuring 3.94 by 1.97 by 0.79 inches. It weighs 2.82 ounces. You can use it to quickly verify output stability without a multimeter.

Pros

• LCD screen displays voltage with 0.01V accuracy
• Built-in buzzer alarms when readings are normal
• Compact size at 3.94 by 1.97 by 0.79 inches
• Tests ATX, ITX, BTX, and TFX connectors

Cons

• LCD voltage display only works on 20- or 24-pin connectors
• External SATA and P4/P6/P8 cables show only light indicators, not voltage
• No multimeter precision for detailed load analysis

Good fit if

• You want a quick check for basic ATX power supply health
• You prefer visual LCD readings over blinking LEDs
• You need a small tool that fits in a toolkit

Skip if

• You need to measure SATA or PCIe cable voltages precisely
• You require a multimeter for detailed electrical diagnostics
• You test non-standard power supply form factors

Verdict: ASHATA 24-Pin LCD PSU Tester is a practical tool for users who need fast, visual confirmation of main rail voltages. It fits builders who want to skip multimeter setup for basic checks.

7

JacobsParts 20/24-Pin LCD Power Supply Tester

Best for: basic ATX voltage verification

Form Factor

ATX

Display Type

LCD Display

Weight

3.53 ounces

View on Amazon: JacobsParts 20/24-Pin LCD Power Supply Tester Affiliate link

This JacobsParts tester checks ATX, ITX, and BTX power supplies via a 20+4 pin connector. It displays +3.3V, +5V, +VSB, and +12V rails on an LCD screen. The device requires no batteries and weighs 3.53 ounces. It fits users who need a simple, portable tool for basic voltage verification without complex setup.

Pros

• LCD screen for clear voltage readings
• Tests +3.3V, +5V, +VSB, and +12V rails
• Compatible with ATX, ITX, and BTX formats
• No batteries required for operation

Cons

• Only tests four voltage rails
• Limited to 20+4 pin connectors
• Does not support PCIe, SATA, or HDD testing

Good fit if

• You need to verify basic ATX voltages
• You want a lightweight, portable tester
• You prefer a display over LED lights

Skip if

• You need to test SATA or HDD power
• You require PCIe voltage checks
• You need to test more than four rails

Verdict: JacobsParts 20+4 Pin LCD PSU Tester is a focused tool for checking standard ATX voltages. It suits users who need basic rail verification without extra features.

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