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CanaKit 3.5A Raspberry Pi 4 Power Supply with PiSwitch (USB-C)
CanaKit

CanaKit 3.5A Raspberry Pi 4 Power Supply with PiSwitch (USB-C)

Bottom line: The CanaKit 3.5A Raspberry Pi 4 Power Supply with PiSwitch ($12.99 on Amazon as of 2026-10-24 04:14 UTC): 3.5A output clears the Pi 4's 3A spec, leaving headroom for SSDs and HATs; main trade-off: locked to USB-C, so it will not power a Pi 3 or earlier micro-USB board. Another in-stock pick with the same Raspberry Pi 4: the CanaKit 3.5A Raspberry Pi 4 Power Supply, $9.99 on Amazon as of (price may vary).

$12.99 on Amazon, checked (price may vary)

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Buy on Amazon — $12.99 Compare to similar single board computers

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

*Price sourced from Amazon.com. Last updated 2026-10-24. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ 3.5A output clears the Pi 4's 3A spec, leaving headroom for SSDs and HATs
  • ✓ Inline PiSwitch adds on/off control without unplugging the USB-C cable
  • ✓ 18 AWG conductor resists the voltage sag that triggers undervoltage warnings
  • ✓ Built-in noise filter targets power stability, not just raw amperage

Cons

  • ✗ Locked to USB-C, so it will not power a Pi 3 or earlier micro-USB board
  • ✗ 5 ft cable may be short for ceiling or rack-mounted Pi installs
  • ✗ Fixed 5V output only, with no USB-PD profiles for other devices
  • ✗ PiSwitch adds an inline body that bulks up tight cable runs

Manufacturer description

The CanaKit 3.5A Raspberry Pi 4 Power Supply solves the single most common Pi 4 problem: the lightning-bolt undervoltage warning that throttles your board mid-workload. This USB-C adapter delivers a steady 3.5A at 5V, giving you headroom above the Pi 4's 3A baseline so attached SSDs, HATs, and USB peripherals do not brown out the board. CanaKit builds in a noise filter for cleaner power delivery and runs the current through a thick 18 AWG insulated cable, which resists the voltage drop that causes thinner cables to trip undervoltage flags. The 5-foot length reaches a desk-side outlet without…

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SpecPicks Verdict

SpecPicks scored CanaKit 3.5A Raspberry Pi 4 Power Supply with PiSwitch 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?

It is built for that case. The supply delivers 3.5A versus the Pi 4's 3A baseline, and uses an 18 AWG cable plus a noise filter to limit voltage drop under load. If the warning persists, the draw is likely from attached peripherals rather than the adapter.

Does it work with the Raspberry Pi 5?

This unit is specified and tested by CanaKit for the Raspberry Pi 4. The Pi 5 has its own higher power requirement, so check the current Raspberry Pi documentation before using it on a Pi 5.

What does the PiSwitch actually do?

It is an inline USB-C on/off switch between the adapter and your Pi, so you can power-cycle without pulling the connector. CanaKit specifies low-resistance contacts so the switch does not itself cause a voltage drop.

How long is the cable, and is it detachable?

The cable is 5 feet of 18 AWG insulated wire, and it is integrated with the supply rather than detachable. The PiSwitch connects inline at the USB-C end.

Is it safety certified, and what warranty comes with it?

The supply is UL Listed. For current warranty terms and return coverage, check the product listing and CanaKit's stated warranty at the time of purchase.

Key Features

  • 3.5A USB-C power supply specially designed and tested for the Raspberry Pi 4
  • Includes CanaKit exclusive USB-C PiSwitch (On/Off power switch for Raspberry Pi 4)
  • Includes noise filter for added stability
  • 18 AWG Cable
  • UL Listed, 5ft Cable Length

Full Specifications

BrandCanaKit
Colorblack
Amperage3.5 A
MaterialPlastic
Form Factorbar
ConnectivityUSB-C
Model NumberDCAR-RSP-3A5-C
CompatibilitySwitch
Input Voltage5 volts
Connector Typeusb
Output Current3.5 A
Output Voltage5 volts
Output Wattage500 watts
Enclosure MaterialPlastic
Connector Type Used on Cableusb

Hardware benchmark data

Ready to buy?

CanaKit 3.5A Raspberry Pi 4 Power Supply with PiSwitch (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.

Buy on Amazon — $12.99

*Price sourced from Amazon.com. Last updated 2026-10-24. Price and availability subject to change.

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CanaKit 3.5A Raspberry Pi 4 Power Supply with PiSwitch (USB-C)
$12.99
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