iUniker 27W PD USB-C Power Supply for Raspberry Pi vs OwlTree PC Power Button, Desktop Power Button PC External
Updated August 2026 — iUniker 27W PD USB-C Power Supply for Raspberry Pi wins on power and price, OwlTree PC Power Button, Desktop Power Button PC External wins on installation.
The iUniker power supply is a superior choice for Raspberry Pi users, while the OwlTree button is a budget-friendly option for desktop setups.
Why iUniker 27W PD USB-C Power Supply for Raspberry Pi is better
Power Output
iUniker provides multiple voltage outputs for versatility.
Safety Features
iUniker includes over-voltage and over-current protection.
Compatibility
iUniker is specifically designed for Raspberry Pi 5.
Why OwlTree PC Power Button, Desktop Power Button PC External is better
Price
OwlTree is significantly cheaper.
Ease of Installation
OwlTree has a simple adhesive installation.
Simplicity
OwlTree serves a straightforward function.
Overall score
Specifications
| Spec | iUniker 27W PD USB-C Power Supply for Raspberry Pi | OwlTree PC Power Button, Desktop Power Button PC External |
|---|---|---|
| Output Voltage | 5.1V/5A, 9V/3A, 12V/2.25A | N/A |
| Input Voltage | 100-240V AC | N/A |
| Protection | Over-voltage, Over-current | None |
| Cable Length | 120mm | 1.7M |
| Installation Type | Plug and Play | Adhesive |
Dimension comparison
Overview of the Products
In this comparison, we will take a closer look at the iUniker 27W PD USB-C Power Supply for Raspberry Pi 5 and the PC Power Button from OwlTree. The iUniker power supply is priced at $10.99, whereas the OwlTree power button costs $6.99. While both products cater to different needs, they each offer distinct features that may appeal to specific users.
Design and Build Quality
The iUniker 27W PD USB-C Power Supply boasts a compact design powered by GaN technology, which allows for a smaller size without sacrificing power output or stability. This makes it a great choice for Raspberry Pi enthusiasts who require efficient and reliable power. On the other hand, the PC Power Button is designed for ease of installation and convenience; it includes a simple adhesive backing for easy placement. While the iUniker power supply focuses on delivering optimal power, the OwlTree button emphasizes usability in hard-to-reach areas.
Performance and Functionality
Performance-wise, the iUniker power supply outputs multiple voltage levels including 5.1V at 5A, 9V at 3A, and 12V at 2.25A, making it versatile for different Raspberry Pi models. This adaptability ensures that users get the right power for their devices without any hassle. In contrast, the PC Power Button is designed primarily for switching power on and off in desktop setups. It's a straightforward device that serves a specific function, but lacks the multi-functional capabilities of the iUniker.
Compatibility
The iUniker power supply is specifically compatible with Raspberry Pi 5 models, including both the 4GB and 8GB versions. This specialization makes it an excellent choice for users committed to the Raspberry Pi ecosystem. Meanwhile, the PC Power Button is versatile as well, recommended for various setups including home users and computer rooms. Its installation flexibility allows it to fit into a range of configurations, making it a convenient option for those who need an external power switch.
Price Comparison
When it comes to pricing, the iUniker power supply is listed at $10.99, while the PC Power Button is more budget-friendly at $6.99. This means that the PC Power Button is about 36% cheaper than the iUniker power supply. Budget-conscious consumers may lean towards the OwlTree button, particularly if they are not in need of a dedicated power supply for a Raspberry Pi. However, the iUniker offers features and performance that may justify its higher price for those specific users.
Installation and Ease of Use
Installation of the iUniker power supply is straightforward; simply plug it into an outlet and connect it to your Raspberry Pi via USB-C. The compact design and included cable ensure that it won’t clutter your workspace. In contrast, the PC Power Button comes with installation instructions that allow for easy setup, including a 1 to 2 splitter board and adhesive stickers for positioning. This makes it especially convenient for users who may have limited access to their PC's internal components.
Safety Features
The iUniker power supply comes equipped with several protective features including over-voltage and over-current protection, ensuring the safety of your Raspberry Pi and reducing the risk of damage. This is particularly important for users who rely on their devices for sensitive tasks. The PC Power Button does not focus on safety features, as its primary function is to provide a convenient method for powering on and off. While both products are safe to use, the iUniker offers an added layer of protection for more complex power needs.
Customer Support and Warranty
iUniker typically offers good customer support and may include a warranty with their power supply, which is valuable for users who might encounter issues. In contrast, while specific warranty information for the PC Power Button is not provided, the simpler functionality of the device may lead to fewer problems. Users should consider their own comfort level with potential issues when assessing customer support needs.
Which should you buy?
Ultimately, the decision between the iUniker 27W PD USB-C Power Supply for Raspberry Pi 5 and the PC Power Button depends on your specific needs. If you are a Raspberry Pi user looking for a reliable and efficient power supply, the iUniker is the clear choice with its powerful output and safety features. However, if you simply need an affordable and convenient way to power on and off your desktop PC, the OwlTree button is a great option at a lower price point. Each product serves its purpose well, making the best choice largely dependent on your individual requirements.

