CanaKit
CanaKit 3.5A Raspberry Pi 4 Power Supply (USB-C)
Bottom line: The CanaKit 3.5A Raspberry Pi 4 Power Supply ($9.99 on Amazon as of 2026-10-06): 3.5A output exceeds the Pi 4's 3.0A spec, leaving headroom for USB peripherals; main trade-off: cable is permanently attached - no swapping it out if it fails.
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*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
Pros & Cons
Pros
- ✓ 3.5A output exceeds the Pi 4's 3.0A spec, leaving headroom for USB peripherals
- ✓ Built-in noise filter steadies the rail during boot and heavy CPU load
- ✓ 18 AWG cable resists the voltage drop that causes undervoltage warnings
- ✓ UL Listed, so it has passed independent electrical safety testing
Cons
- ✗ Cable is permanently attached - no swapping it out if it fails
- ✗ 5ft length may not reach outlets in rack or wall-mount installs
- ✗ USB-C only, so it will not power older micro-USB Pi 3 or Zero boards
- ✗ No inline power switch - you unplug the barrel end to cycle the board
Manufacturer description
3.5A USB-C power supply specially designed and tested for the Raspberry Pi 4 Includes noise filter for added stability 18 AWG Cable
SpecPicks Verdict
SpecPicks scored CanaKit 3.5A Raspberry Pi 4 Power Supply using a rating × review-volume × price-fit model applied to published specs and reviews across the single board computers category. CanaKit's single board computers lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
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 retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
Will this stop the undervoltage lightning bolt on my Raspberry Pi 4?
In most cases, yes. The lightning-bolt icon appears when the Pi's 5V rail sags, which is typically caused by an underpowered charger or a thin cable. This unit supplies 3.5A over an 18 AWG conductor and includes a noise filter for added stability, addressing both causes.
Is 3.5A enough, or do I need more power for my Pi 4?
3.5A is above the Raspberry Pi 4's official requirement, and the extra current gives you headroom for USB peripherals such as external SSDs, keyboards, and powered hubs. This supply is specially designed and tested for the Pi 4 specifically.
Will this work with a Raspberry Pi 3 or Pi Zero?
No. This is a USB-C supply, and the Pi 3, Pi 3 B+, and Pi Zero use a micro-USB power input. It fits the Pi 4 and other boards with a USB-C power port.
How long is the cable, and can I replace it?
The cable measures 5 feet and uses 18 AWG conductors. It is part of the supply rather than a detachable cord, so plan your outlet placement around that 5-foot run.
Is this power supply electrically safe to leave running 24/7?
The unit is UL Listed, meaning it has been tested to recognized safety standards by an independent laboratory. That certification is why many buyers choose it for always-on Pi projects; check the product listing for current warranty terms.
Key Features
- 3.5A USB-C power supply specially designed and tested for the Raspberry Pi 4
- Includes noise filter for added stability
- 18 AWG Cable
- UL Listed
- 5ft Cable Length
Full Specifications
| Size | 3.5A |
|---|---|
| Brand | CanaKit |
| Model | USB-C |
| UnitCount | 1 |
| Manufacturer | CanaKit |
| IsAdultProduct | false |
| ItemPartNumber | USB-C |
Ready to buy?
CanaKit 3.5A Raspberry Pi 4 Power Supply (USB-C) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
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