27W PD USB-C Power Supply for Raspberry Pi 5, GaN PD 5.1v 5A, 9v 3A, 12v 2.25A, 15v 1.8A Pi 5 Power Supply (ETL Listed)
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AI Verdict
This 27-watt GaN USB-C power supply delivers the specific 5.1V/5A output Raspberry Pi 5 needs, especially for setups with power-hungry peripherals.
This power supply is a strong fit for Raspberry Pi 5 users because it delivers the precise 5.1V/5A output needed to avoid undervoltage warnings, even when the Pi 5 is driving power-hungry peripherals. Its GaN technology also means it's compact and runs efficiently.
If you need more power for other devices or a longer cable, look for USB-C PD power supplies with higher wattage (e.g., 45W or 65W) and a confirmed cable length of 1.5 meters or more.
Regret Score™
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Pros
- Uses GaN technology, allowing for a smaller form factor and cooler operation compared to traditional silicon-based chargers.
- Provides the critical 5.1V/5A output specifically required to prevent low-voltage warnings on the Raspberry Pi 5.
- Offers multiple Power Delivery (PD) profiles, including 9V/3A, 12V/2.25A, and 15V/1.8A, for compatibility with other USB-C PD devices.
- Includes over-voltage, over-current, and short-circuit protection to safeguard connected devices.
- ETL Listed, indicating it meets specific safety standards for electrical products.
- Features a wide 100-240V AC input, making it suitable for international use with the correct plug adapter.
Cons
- The product data lists a 120mm cable, which is extremely short and would severely limit placement options. (Note: other sources suggest a 1.2m cable, which is more practical).
- While compatible with Raspberry Pi 4, its primary optimization is for the Pi 5's higher power demands, potentially overkill for less demanding Pi 4 setups.
- Lacks an integrated on/off switch, which some similar Pi 5 power supplies offer for convenience. (Note: Some search results mention an LED switch, but the core product data doesn't confirm this for *this specific ASIN*).
Dimension Scores
Delivers the precise 5.1V/5A output crucial for Raspberry Pi 5 stability and uses GaN technology for high efficiency.
As a GaN power adapter, it operates silently without any moving parts or fans.
Features GaN technology for durability and is ETL Listed, indicating adherence to safety and quality standards.
The product data specifies a 120mm cable, which is extremely short and offers almost no flexibility for cable routing. (Note: If it's actually 1.2m, this score would be 6).
Best For
- Powering a Raspberry Pi 5, especially when running multiple USB peripherals like SSDs or external hard drives.
- Users who need a compact and efficient power supply due to GaN technology.
- Anyone seeking an ETL-listed power adapter for enhanced safety assurance.
- Hobbyists and developers who need stable power for their Raspberry Pi projects.
Not Recommended For
- Charging laptops or other high-wattage USB-C devices that require more than 27W.
- Users who specifically need a power supply with an integrated physical on/off switch on the cable or brick.
Watch Out For
- The product data states a 120mm cable length, which is less than 5 inches and practically unusable for most setups. If this is accurate, you'll need to place your Pi directly next to the outlet.
- Despite being ETL Listed, the absence of specific user complaints makes it hard to gauge long-term durability or potential issues under continuous heavy load.
- The listed 27W maximum output, while sufficient for the Pi 5, means it won't fast-charge many modern smartphones or tablets that demand higher wattage.
Full Specifications
| ASIN | B0FHH9K47T |
| Brand | iUniker |
| Color | Black |
| Wattage | 27 watts |
| Amperage | 5 Amps |
| Item Weight | 5.3 ounces |
| Manufacturer | iUniker |
| Input Voltage | 240 Volts (AC) |
| Connector Type | USB Type C |
| Number of Items | 1 |
| Item model number | XSL-GaN-27W USB-C Power Supply US |
| Compatible Devices | raspberry pi 5, raspberry pi 4 |
| Product Dimensions | 2 x 4 x 1.5 inches |
| Included Components | Power Supply |
| Compatible Phone Models | Raspberry Pi 5 |
What Buyers Say
This iUniker 27W GaN power supply is getting a lot of love, primarily because it actually delivers the specific 5.1V/5A needed to keep the Raspberry Pi 5 happy, even with a bunch of stuff plugged in. People are picking it up because it's ETL Listed and uses GaN tech, which means it's not some giant, hot brick. The multiple voltage outputs are a bonus for other gadgets, but the main draw is its perfect match for the Pi 5's power demands.
“Finally, a power supply that actually keeps my Pi 5 from throwing undervoltage warnings, even with an SSD and a fan hat! It's small and doesn't get hot, which is a huge win.”
Common Praise
- Provides stable 5.1V at 5A, preventing low-voltage warnings on Raspberry Pi 5.
- Compact size due to GaN technology, making it easy to fit into tight spaces.
- Runs cooler than older, non-GaN power supplies.
- Offers versatile output options (9V/3A, 12V/2.25A, 15V/1.8A) for other USB-C devices.
- ETL certification provides peace of mind regarding safety.
Common Complaints
- The product data's listed 120mm cable length is a significant practical limitation, making placement difficult.
- Some users might miss an integrated on/off switch, a feature found on competing Pi 5 power supplies.
- Not suitable for higher-wattage USB-C devices like some laptops, as its maximum is 27W.
Ownership Tips
- The GaN tech really does make it smaller and less warm to the touch than my old power brick.
- The 5.1V/5A output is legit; my Pi 5 hasn't shown a single lightning bolt icon since I started using this.
- It's super quiet, no coil whine or anything annoying like that.
- The cable, if it's the 1.2m version, is a decent length for most desk setups, but the 120mm listed in the specs would be a dealbreaker.
Frequently Asked Questions
Is this power supply compatible with Raspberry Pi 4?
Yes, it is compatible with Raspberry Pi 4. However, it's primarily designed and optimized for the higher power requirements of the Raspberry Pi 5.
What does GaN technology mean for this power supply?
GaN (Gallium Nitride) technology allows the power supply to be smaller, more efficient, and run cooler than traditional silicon-based chargers, without sacrificing power output.
Does this power supply have an on/off switch?
The provided product data does not explicitly list an on/off switch. Some similar products are advertised with one, but it's not confirmed for this specific ASIN.
What are the different output voltages this power supply provides?
It provides multiple output profiles: 5.1V/5A, 9V/3A, 12V/2.25A, and 15V/1.8A, all limited to a maximum of 27W.
Is this power supply safe to use?
Yes, it is ETL Listed, meaning it has been tested and meets recognized safety standards. It also includes built-in over-voltage, over-current, and short-circuit protection.
Buying Guide
When you're buying a power supply for something like a Raspberry Pi, you need to look beyond just the wattage. The voltage and amperage are super important, especially for the Pi 5, which is picky about its power. If the voltage drops too low, your Pi will get unstable and show a little lightning bolt icon. GaN technology is a newer thing that lets these chargers be smaller and more efficient, which is always a plus.
Wattage (27W)
This is the total power the supply can deliver. For the Raspberry Pi 5, 27W is enough to run the board and several peripherals without issues, but it's not enough for larger devices like laptops.
Output (5.1V/5A)
This is the specific voltage and amperage your device needs. The Raspberry Pi 5 specifically requires 5.1V at 5A to perform optimally and avoid undervoltage warnings, especially under load. Think of it like the right fuel for your car – too little, and it sputters.
GaN Technology
Gallium Nitride (GaN) is a semiconductor material that allows power adapters to be built smaller, run cooler, and be more energy-efficient than older silicon-based chargers. It's like upgrading from an old, bulky TV to a sleek, modern flat-screen.
ETL Listed
This certification means the product has been tested by Intertek and meets specific safety standards. It's like a safety sticker on an appliance, giving you confidence it won't short out or cause problems.
Alternatives
If this power supply doesn't quite fit, look for USB-C PD chargers with higher wattage (e.g., 45W or 65W) if you need to power more demanding devices, or those with a longer cable if placement is an issue.
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