Geekworm

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

Name: 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
Brand: Geekworm
SKU: B09J856PND
Price: 9.90 USD
Availability: InStock

By Mike Perry, Hardware Editor · Verified 2026-09-07

Mike Perry has researched PC hardware since 2014, tracking 80+ GPU generations, 50+ retro handheld platforms, and 30+ vintage PC configurations. He synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. View full credentials →

$9.90

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View Current Price on Amazon → Compare to similar single-board computers

*Price sourced from Amazon.com. Last updated 2026-04-23. Price and availability subject to change.

Bottom line: The 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 is a niche pick — read recent reviews before buying in the single-board computers category, priced around $9.90. Compare close alternatives before committing.

About this item 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…

SpecPicks Verdict

SpecPicks scored Geekworm Power Supply for Raspberry Pi 4, 20W 5V 4A USB C Power… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the single-board computers category. Geekworm's single-board computers lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Mixed or limited buyer feedback at this price point — focus your evaluation on recent reviews that specifically address build quality and long-term reliability, and shortlist one or two close alternatives before deciding.

Common buyer scenarios for single-board computers of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.

Pros & Cons

Pros

✓ Packing List 1x 5V 4A US Plug Type-C Power Supply
✓ Backed by Geekworm's warranty and support channels
✓ Ships via Amazon with Prime eligibility and the standard returns policy

Cons

✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified

Key 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

Full Specifications

ASIN	B09J856PND
Brand	Geekworm
Color	Black
Wattage	20 watts
Amperage	4 Amps
Portable	No
Power Plug	Type A - 2 pin (North American)
Unit Count	1.0 Count
Item Weight	131 Grams
Manufacturer	Geekworm
Model Number	TB-2021-35
Power Source	Corded Electric
Input Voltage	240 Volts
Mounting Type	Wall Mount
Built-In Media	1x 5V 4A US Plug Type-C Power Supply
Connector Type	usb
Output Current	4 Amps
Output Voltage	5 Volts
Frequency Range	50-60 Hz
Number of Items	1

Ready to buy?

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 is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Current Price on Amazon →

*Price sourced from Amazon.com. Last updated 2026-04-23. Price and availability subject to change.