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 Charge Tester PD3.1 QC5.0 Digital Voltmeter & Ammeter Current Tester

Product ID: 682939363

Details

Brand
ChargerLAB
Colour
Silver
Item weight
0.58 Ounces
Power source
Usb Type-c
Style
Modern

⚡Supports PD3.1 & QC5.0 fast charging

📊1.54-inch high-contrast rotating LCD

🔌Dual USB-C ports + HID PC connectivity

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Description

⚡ Power up your USB-C game with precision and style!

CRYSTAL CLEAR DISPLAY - 1.54-inch gravity-rotating LCD ensures you never miss a detail, even in low light.
POWERHOUSE PERFORMANCE - ARM Cortex M4 + 20-bit ADC deliver up to 240W measurement accuracy for pro-grade insights.
ALL IN ONE USB C DIAGNOSTIC - Dual USB-C ports plus HID interface let you test, analyze, and log data seamlessly on your PC.
GLOBAL READY USER FRIENDLY - Bilingual support and downloadable PC software keep you updated and in control.
NEXT GEN FAST CHARGE DETECTION - Stay ahead with official PD3.1 & QC5.0 protocol support for ultra-precise power analysis.

The Power-Z KM003C is a cutting-edge portable USB-C fast charge tester featuring official PD3.1 and QC5.0 support, a large 1.54-inch rotating LCD, and dual USB-C ports with HID connectivity. Powered by an ARM Cortex M4 processor and 20-bit ADC, it delivers professional-grade voltage, current, and protocol analysis up to 240W. Ideal for tech-savvy professionals diagnosing USB-C and Thunderbolt cables, it offers bilingual support and PC software for advanced data logging and analysis.

Specifications

ASIN	B0BJ24PVNJ
ASIN	B0BJ24PVNJ
Best Sellers Rank	#33,551 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #78 in Voltage Testers
Brand Name	ChargerLAB
Color	Silver
Customer Reviews	4.5 4.5 out of 5 stars (218)
Customer reviews	4.5 4.5 out of 5 stars (218)
Date First Available	17 September 2023
Included Components	Super capacitor
Item Dimensions	35 x 9 x 36 millimeters
Item Weight	0.58 Ounces
Item model number	KM003C
Manufacturer	ChargerLAB
Manufacturer	ChargerLAB
Measurement Type	Voltmeter, ammeter
Model	KM003C
Part Number	KM003C
Power Source	Usb Type-c
Product Dimensions	3.55 x 0.87 x 3.65 cm; 16.44 g
Specification Met	FCC
Style Name	Modern
UPC	756166474123

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