I need to test the power on pc ports while using 20gbps external drives. will this support that? if not how high will it go?

Yes, it works. I tested it with a Lexar NM620 512GB M.2 NVMe SSD in an Silverstone MS12 external USB 3.2 Gen 2x2 20Gbps enclousure. Normaly i get 2100MBps read/write speeds. When i use the Power-Z to measure the power consumption i get read speeds about 1600MBps and 2000MBps write speed.

Does this test for faulty/slow (usb 2.0) cables aswell? i need something to verify usb-c cables are 5/10/20/40gbps.

The tester can detect the E-Marker Chip of the cable, which can display its specs info, such as charging speed and data transmission speed. But most USB 2.0 is not equipped with E-Marker Chip, so the tester cannot test it.

Can i use a usb-a adapter to test usb-a ports?

It can support testing USB-A devices using a USB-C to USB-A cable. You can also use a USB-A adapter, but test results may be affected by the adapter.

How to test chargers with attached cable? Is there a male to female adapter included?

Firstly, there is no male to female adaptor included, but you can also test the charger with attached cable. Just put the tester between the load (like your laptops, phones) and the attached USB-C cable. Or simply insert the attached cable into the USB-C Female (Receptacle) of KM003C and connect the tester to an independent power supply. For more tech support info, you can visit: https://www.chargerlab.com/km003c-km002c-technical-support/

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ChargerLAB Power-Z KM003C Portable USB-C Fast Charging Tester PD3.1 QC5.0 Digital Voltmeter & Ammeter Power Bank Tester

ChargerLAB Power-Z KM003C Portable USB-C Fast Charging Tester PD3.1 QC5.0 Digital Voltmeter & Ammeter Power Bank Tester

Product ID: 525056779

Details

Brand
ChargerLAB
Power Source
Battery
Colour
Black
Item Weight
0.58 Ounces
Item dimensions L x W x H
35 x 9 x 36

⚡PD3.1 Support

📊1.54" Display

🔌50V 6A Capacity

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Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔍 Discover the Future of Charging Testing!

USB C READY - Designed with dual USB-C ports for seamless connectivity and data transfer.
HIGH PERFORMANCE - Harness the power of an ARM Cortex-M4 processor for accurate data collection.
UNLEASH YOUR POWER - Experience the cutting-edge PD3.1 technology for rapid charging insights.
COMPREHENSIVE TESTING - Conduct multiple tests including voltage, current, and protocol analysis with ease.
CRYSTAL CLEAR READINGS - Enjoy a larger 1.54-inch LCD display with gravity rotation for effortless viewing.

The ChargerLAB Power-Z KM003C is a state-of-the-art portable USB-C fast charging tester that supports PD3.1 and QC5.0. With a larger 1.54-inch LCD display, it allows for multiple tests including voltage, current, and protocol analysis. Powered by an ARM Cortex-M4 processor, it can handle up to 50V and 6A, making it an essential tool for tech enthusiasts and professionals alike.

Specifications

ASIN	B0BJ24PVNJ
Best Sellers Rank	#22,736 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #408 in Voltage Testers
Brand	ChargerLAB
Brand Name	ChargerLAB
Colour	Black
Customer Reviews	4.5 out of 5 stars 218 Reviews
Item Dimensions	35 x 9 x 36 Millimeters
Item Weight	0.58 Ounces
Item dimensions L x W x H	35 x 9 x 36 Millimeters
Manufacturer	ChargerLAB
Measurement Type	Multimeter
Min. Operating Voltage	50 Volts
Minimum Operating Voltage	50 Volts
Model Number	KM003C
Part Number	KM003C
Power Source	Battery Powered
Power Source Type	Battery Powered
Specification Met	CE
UPC	756166474123

Reviews

F**E

14.05.2025

A**D

4.09.2025

H**.

21.10.2025

A**.

14.03.2024

I**T

18.03.2026

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