---
product_id: 371659945
title: "Geekworm Power Supply for Raspberry Pi 4, 20W 5V 4A USB C Power Adapter Type C Charger UL Listed Compatible with Raspberry Pi 4 Model B/Orange Pi 5/NASPi/KVM-A3/KVM-A8/X651/X735/X306/X728/X703"
brand: "geekworm"
price: "£11.26"
currency: GBP
in_stock: true
reviews_count: 12
category: "Geekworm"
url: https://www.desertcart.co.uk/products/371659945-geekworm-power-supply-for-raspberry-pi-4-20w-5v-4a
store_origin: GB
region: United Kingdom
---

# 5V 4A high output USB-C universal compatibility Multi-layer safety protections Geekworm Power Supply for Raspberry Pi 4, 20W 5V 4A USB C Power Adapter Type C Charger UL Listed Compatible with Raspberry Pi 4 Model B/Orange Pi 5/NASPi/KVM-A3/KVM-A8/X651/X735/X306/X728/X703

**Brand:** geekworm
**Price:** £11.26
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your Pi like a pro — never miss a beat!

## Quick Answers

- **What is this?** Geekworm Power Supply for Raspberry Pi 4, 20W 5V 4A USB C Power Adapter Type C Charger UL Listed Compatible with Raspberry Pi 4 Model B/Orange Pi 5/NASPi/KVM-A3/KVM-A8/X651/X735/X306/X728/X703 by geekworm
- **How much does it cost?** £11.26 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/371659945-geekworm-power-supply-for-raspberry-pi-4-20w-5v-4a)

## Best For

- geekworm enthusiasts

## Why This Product

- Trusted geekworm brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Ready to Plug & Play:** Includes a 1.2m cable and US Type-A plug for immediate, hassle-free setup.
- • **Certified Reliability:** UL Listed for guaranteed safety and stable power delivery, eliminating under-voltage warnings.
- • **Built-In Safety Shield:** Equipped with over-voltage, under-voltage, over-current, over-temperature, and short circuit protections for worry-free operation.
- • **Power Up with Precision:** Delivers a stable 5V 4A (20W) output tailored for Raspberry Pi 4 and compatible devices.
- • **Universal USB-C Compatibility:** Seamlessly supports Raspberry Pi 4 variants, Orange Pi models, and popular expansion boards.

## Overview

The Geekworm Type-C 5V 4A Power Supply is a UL-listed, high-performance charger designed specifically for Raspberry Pi 4 and compatible single-board computers. Delivering a reliable 20W output with comprehensive safety features, it ensures stable, efficient power for your projects, backed by a 1.2m cable and universal USB-C connectivity.

## Description

Product description 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. 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. 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. Power Supply Options PD 27W 5.1V 5A 20W 5V 4A 60W 12V 5A

Review: I use it daily 😎 - It works. Quality is pretty good too. Take good care of it and I am sure it’ll last for many decades 😁
Review: Great brick - Works great for my usb c ohm tech 18650 battery charger really needed a 4 amp power supply and this came in handy would recommend

## Features

- Compatibility: USB-C Type C power adapter designed and tested for the Raspberry Pi 4 Model B 1GB/2GB/4GB/8GB Version; Also support NASPi/X-C1/X825/X735/X728/X708/X703/X306 expansion board/Retroflag PiStation Case/Orange Pi 5/5B/4B/3B/Pi 800/4 LTS/3 LTS/Zero 2/Zero 3
- Power Input: 100-240V AC, 50-60Hz, 0.8A Max; Output: 5V 4A 20W; Cable length: 1.2 m / 47.24 inches
- UL Listed 5.1V 4A USB-C Power Adapter for Raspberry Pi 4B: Certified Safety and Stable Power Supply to Prevent Under-Voltage Warnings
- Power Supply Functions: Over voltage protection; Under voltage protection; Over temperature protection; Over current protection; Short circuit protection
- Packing List: 1x 5V 4A US Plug Type-C Power Supply

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09J856PND |
| Additional Features | Short Circuit Protection |
| Amperage | 4 Amps |
| Best Sellers Rank | #169 in Computer Power Supplies |
| Brand | Geekworm |
| Built-In Media | 1x 5V 4A US Plug Type-C Power Supply |
| Color | Black |
| 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 Devices Orange Pi 5/5B/3B/5 Plus, Phone with USB Type-C power in port, Raspberry Pi 4 Model B, RockPi, Thinker Board See more |
| Compatible Phone Models | Raspberry Pi 4 8GB/4GB/2GB/1GB |
| Compatible Power Plug Type | Type C |
| Connectivity Technology | USB |
| Connector Type | usb |
| Current | DC |
| Current Rating | 4 Amps |
| Customer Package Type | FFP |
| Customer Reviews | 4.7 out of 5 stars 200 Reviews |
| Enclosure Material | Plastic |
| Form Factor | Stand |
| Frequency Range | 50-60 Hz |
| Included Components | 1x 5V 4A US Plug Type-C Power Supply |
| Input Voltage | 240 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 |
| Portable | No |
| Power Plug | Type A - 2 pin (North American) |
| Power Source | Corded Electric |
| Special Feature | Short Circuit Protection |
| Specification Met | UL |
| Total Usb Ports | 1 |
| Unit Count | 1.0 Count |
| Voltage | 5 Volts |
| Warranty Description | 3 months |
| Wattage | 20 watts |
| Wired Charging Connector Type | USB Type C |

## Product Details

- **Amperage:** 4 Amps
- **Brand:** Geekworm
- **Color:** Black
- **Compatible Phone Models:** Raspberry Pi 4 8GB/4GB/2GB/1GB
- **Connector Type:** usb
- **Included Components:** 1x 5V 4A US Plug Type-C Power Supply
- **Input Voltage:** 240 Volts
- **Special Feature:** Short Circuit Protection
- **Total USB Ports:** 1

## Images

![Geekworm Power Supply for Raspberry Pi 4, 20W 5V 4A USB C Power Adapter Type C Charger UL Listed Compatible with Raspberry Pi 4 Model B/Orange Pi 5/NASPi/KVM-A3/KVM-A8/X651/X735/X306/X728/X703 - Image 1](https://m.media-amazon.com/images/I/71vovZlNPUL.jpg)
![Geekworm Power Supply for Raspberry Pi 4, 20W 5V 4A USB C Power Adapter Type C Charger UL Listed Compatible with Raspberry Pi 4 Model B/Orange Pi 5/NASPi/KVM-A3/KVM-A8/X651/X735/X306/X728/X703 - Image 2](https://m.media-amazon.com/images/I/71EHu6+Vw0L.jpg)
![Geekworm Power Supply for Raspberry Pi 4, 20W 5V 4A USB C Power Adapter Type C Charger UL Listed Compatible with Raspberry Pi 4 Model B/Orange Pi 5/NASPi/KVM-A3/KVM-A8/X651/X735/X306/X728/X703 - Image 3](https://m.media-amazon.com/images/I/71oPrE05i0L.jpg)
![Geekworm Power Supply for Raspberry Pi 4, 20W 5V 4A USB C Power Adapter Type C Charger UL Listed Compatible with Raspberry Pi 4 Model B/Orange Pi 5/NASPi/KVM-A3/KVM-A8/X651/X735/X306/X728/X703 - Image 4](https://m.media-amazon.com/images/I/71VmA4Nz5eL.jpg)
![Geekworm Power Supply for Raspberry Pi 4, 20W 5V 4A USB C Power Adapter Type C Charger UL Listed Compatible with Raspberry Pi 4 Model B/Orange Pi 5/NASPi/KVM-A3/KVM-A8/X651/X735/X306/X728/X703 - Image 5](https://m.media-amazon.com/images/I/81pPb15ftoL.jpg)

## Questions & Answers

**Q: How to Test the PSU Output correctly?**
A: 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.

**Q: Does this power supply support fast charging?**
A: No. This is a standard Type-C 5V 4A power adapter and does not support fast charging protocols.

## Customer Reviews

### ⭐⭐⭐⭐⭐ I use it daily 😎
*by G***R on October 13, 2025*

It works. Quality is pretty good too. Take good care of it and I am sure it’ll last for many decades 😁

### ⭐⭐⭐⭐⭐ Great brick
*by W***E on August 9, 2025*

Works great for my usb c ohm tech 18650 battery charger really needed a 4 amp power supply and this came in handy would recommend

### ⭐⭐⭐⭐⭐ One Happy Raspberry Pi
*by D***. on February 22, 2025*

Works great and provides constant and continuous power to my Pi's.

## Frequently Bought Together

- Geekworm Power Supply for Raspberry Pi 4, 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
- Geekworm KVM-A3 Kit for Raspberry Pi 4 Open Source KVM Over IP Compatible with KVM V3 Platform Only (Unassembled and Not Include Raspberry Pi 4/SD Card/Power Adapter)
- Raspberry Pi 4 Model B 2019 Quad Core 64 Bit WiFi Bluetooth (4GB)

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-06-01*