How to Test the PSU Output correctly?

Please refer to our test video: youtu.be/leqeFTJcSHk; the test method by Noah Ferro is not right test method, it need to add load to test the power supply output ability.

Does this power supply support fast charging?

No. This is a standard Type-C 5V 4A power adapter and does not support fast charging protocols.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Geekworm 20W 5V 4A USB C Power Adapter Type C Charger UL Listed Compatible with Raspberry Pi 4 Model B/Orange Pi 5/NASPi/DACPi/X-C1/X735/X728/X708/X703

Product ID: 550105779

Details

Amperage
4 Amps
Brand
Geekworm
Colour
berry
Compatible phone models
Raspberry Pi 4
Connector type
usb
Included components
1x 5V 4A US

⚡20W high power output

🔌USB-C universal compatibility

🛡️UL certified safety protections

HK$496

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔋 Power your passion with confidence — never settle for less!

OPTIMIZED CABLE LENGTH - 1.2 meters of premium cable length strikes the perfect balance between flexibility and neat workspace setup.
PLUG PLAY CONVENIENCE - Wall-mountable, lightweight (131g), and designed for continuous use—ideal for professionals who demand stable power in their projects.
POWER UP WITHOUT LIMITS - Delivers a robust 5V/4A output to keep your Raspberry Pi and compatible devices running flawlessly, no undervoltage warnings ever.
CERTIFIED SAFETY ASSURANCE - UL Listed with built-in protections against overvoltage, undervoltage, overheating, overcurrent, and short circuits for 24/7 peace of mind.
UNIVERSAL USB C COMPATIBILITY - Seamlessly powers Raspberry Pi 4 Model B, Orange Pi 5, NASPi, and a wide range of expansion boards and retro cases with one reliable adapter.

The Geekworm 20W 5V 4A USB-C Power Adapter is a UL certified, high-performance charger engineered for Raspberry Pi 4 Model B and a broad spectrum of compatible single-board computers and accessories. Featuring robust safety protections and a universal USB-C interface, it ensures stable, reliable power delivery with a convenient 1.2m cable, making it the go-to choice for tech professionals and makers who refuse to compromise on quality or reliability.

Specifications

ASIN	B09J856PND
Amperage	4 Amps
Brand	Geekworm
Built-In Media	1x 5V 4A US Plug Type-C Power Supply
Color	berry
Compatible Devices	Orange Pi 5/5B/3B/5 Plus, Phone with USB Type-C power in port, Raspberry Pi 4 Model B, RockPi, Thinker Board
Compatible Phone Models	Raspberry Pi 4 8GB/4GB/2GB/1GB
Compatible Power Plug Type	Type A - 2 pin (North American)
Connectivity Technology	USB
Connector Type	usb
Current Rating	4 Amps
Customer Package Type	FFP
Customer Reviews	4.7 4.7 out of 5 stars (193)
Enclosure Material	Plastic
Form Factor	Standard USB C Charging Adapter
Frequency Range	50-60 Hz
Input Voltage	5 Volts
Item Weight	131 Grams
Main Power Connector Type	2 pin
Manufacturer	Geekworm
Mfr Part Number	TB-2021-35
Model Name	Power Adapter
Model Number	TB-2021-35
Mounting Type	Wall Mount
Number of Items	1
Number of Power Levels	1
Output Current	4 Amps
Output Voltage	5 Volts
Plug Type	A- US style
Portable	No
Power Plug	Type A - 2 pin (North American)
Power Source	Corded Electric
Special Features	Short Circuit Protection
Specification Met	UL
Total USB 3.0 Ports	1
Total Usb Ports	1
Unit Count	1.0 Count
Voltage	5 Volts
Wattage	20 watts
Wired Charging Connector Type	USB Type C

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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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