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

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

Product ID: 524979955

Details

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

⚡240W max fast charging power

📊1.54-inch high-contrast LCD display

🔌Supports USB PD3.1 & QC5.0 protocols

₩367964

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Description

⚡ Power up your charging game with precision and style!

COMPACT LIGHTWEIGHT - Ultra-portable 35x9x36mm design weighing just 0.58 oz—carry precision anywhere.
CRYSTAL CLEAR DISPLAY - 1.54-inch gravity-rotatable LCD with high contrast UI for effortless real-time monitoring.
ALL IN ONE TESTING SUITE - Voltage, current, capacity, E-marker, PDO, and protocol tests in one sleek device.
UNMATCHED POWER DELIVERY - Supports up to 240W charging with USB PD3.1 for next-level fast charging.
FUTURE PROOF COMPATIBILITY - Latest SPR AVS support under PD 3.2 ensures cutting-edge tech readiness.

The Power-Z KM003C is a compact, professional-grade USB-C fast charging tester supporting the latest USB PD3.1 and QC5.0 protocols. Featuring a large 1.54-inch rotatable LCD, it delivers real-time voltage, current, and capacity data, plus advanced tests like E-marker and PDO. With up to 240W power support and future-proof SPR AVS compatibility, it’s the ultimate tool for tech-savvy professionals ensuring optimal charging performance.

Specifications

Asin	B0BJ24PVNJ
Best Sellers Rank	156,532 in DIY & Tools (See Top 100 in DIY & Tools) 236 in Voltage Testers
Brand	ChargerLAB
Colour	Silver
Country Of Origin	China
Customer Reviews	4.6 4.6 out of 5 stars (230) 4.6 out of 5 stars
Item Dimensions	35 x 9 x 36 millimetres
Item Weight	0.58 Ounces
Manufacturer	ChargerLAB
Manufacturer Part Number	KM003C
Measurement Type	Multimeter
Model Number	KM003C
Power Source	Usb Type-c
Specification Met	FCC
Style Name	Compact
Upc	756166474123

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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₩367964

Duties & taxes included

In stock

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

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Korea.

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TrustScore 4.5 | 7,300+ reviews

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