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 PD3.2 QC5.0 Digital Voltmeter & Ammeter Power Bank Tester

ChargerLAB Power-Z KM003C Portable USB-C Fast Charging Tester PD3.2 QC5.0 Digital Voltmeter & Ammeter Power Bank Tester

Product ID: 492307095

Details

Brand
ChargerLAB
Color
Silver
Item Weight
16.47 g
Power Source
Usb Type-c
Style
Modern

⚡Supports PD3.2 fast charging

📊1.54-inch high-contrast LCD display

🔌Up to 50V/6A (240W) power measurement

S$199

Duties & taxes included

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Description

⚡ Power up your tech IQ with the ultimate USB-C fast charging tester!

DATA DRIVEN DECISIONS - PC software supports 10 million data points for deep analysis and future-proof updates.
PRECISION MEETS POWER - ARM Cortex-M4 & 20-bit ADC deliver ultra-accurate voltage, current, and protocol tests up to 240W.
CRYSTAL CLEAR DATA AT A GLANCE - Larger 1.54-inch gravity-rotating LCD with high contrast UI for instant readings.
NEXT GEN FAST CHARGING INSIGHT - Harness PD3.2 & QC5.0 protocols for cutting-edge power analysis.
ALL IN ONE USB C TESTING POWERHOUSE - Dual USB-C ports plus HID for seamless device & PC connectivity.

The ChargerLAB Power-Z KM003C is a professional-grade USB-C fast charging tester supporting PD3.2 and QC5.0 protocols. Featuring a large 1.54-inch high-contrast LCD with gravity rotation, it measures voltage, current, capacity, and protocol data up to 50V/6A (240W). Equipped with dual USB-C ports and advanced ARM Cortex-M4 processing, it offers precise, real-time diagnostics and extensive PC software support for data analysis and firmware updates—ideal for tech-savvy professionals and power users.

Specifications

ASIN	B0BJ24PVNJ
Best Sellers Rank	#16,411 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #16,206 in Cell Phone Accessories
Brand Name	ChargerLAB
Color	Silver
Compatible Devices	Laptops, Power Banks, Smartphones, Tablets, USB-C Chargers & Cables
Customer Reviews	4.5 4.5 out of 5 stars (241)
Included Components	1 x ChargerLAB POWER-Z KM003C Tester, 1 x Metal Case, 1 x Social Media Card
Item Dimensions	1.4 x 0.34 x 1.44 inches
Item Weight	16.47 g
Manufacturer	ChargerLAB
Maximum Operating Voltage	50 volts
Measurement Type	Ammeter, Voltmeter, Multimeter
Model	KM003C
Number of Items	1
Number of Packs	1
Part Number	KM003C
Power Source	Usb Type-c
Specification Met	CE, EMC, FCC, RoHS
Style Name	Modern
UPC	756166474123
Unit Count	1 Count
Upper Temperature Rating	65 °C

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