CanaKit 3.5A Raspberry Pi 4 Power Supply vs iUniker 27W PD USB-C Power Supply for Raspberry Pi
Updated August 2026 — CanaKit 3.5A Raspberry Pi 4 Power Supply wins on cable length, iUniker 27W PD USB-C Power Supply for Raspberry Pi wins on power and price.
The CanaKit power supply is a cost-effective choice for Raspberry Pi 4 users, while the iUniker offers more versatility for Raspberry Pi 5 users.
Why CanaKit 3.5A Raspberry Pi 4 Power Supply is better
Price
CanaKit is cheaper at $9.99
Cable Length
CanaKit has a longer 5-foot cable
Compatibility
CanaKit is specifically designed for Raspberry Pi 4
Why iUniker 27W PD USB-C Power Supply for Raspberry Pi is better
Power Output
iUniker provides up to 27W power
Safety Features
iUniker includes over-voltage and over-current protection
Compatibility
iUniker is compatible with Raspberry Pi 5
Overall score
Specifications
| Spec | CanaKit 3.5A Raspberry Pi 4 Power Supply | iUniker 27W PD USB-C Power Supply for Raspberry Pi |
|---|---|---|
| Brand | CanaKit | iUniker |
| Voltage | 5V | 5.1V-15V |
| Cable Type | 18 AWG | 18 AWG |
| UL Listed | Yes | No |
| GaN Technology | No | Yes |
Dimension comparison
Overview of CanaKit 3.5A Raspberry Pi 4 Power Supply
The CanaKit 3.5A Raspberry Pi 4 Power Supply is specifically designed for the Raspberry Pi 4, making it a tailored solution for users of this model. Priced at $9.99, it offers a reliable power option with features aimed at enhancing performance and stability. The power supply includes a noise filter, ensuring a stable power delivery that can enhance the overall functionality of the Raspberry Pi 4. Additionally, the product boasts a 5-foot cable, providing flexibility in placement. This power supply is UL Listed, indicating it has met certain safety standards, which is a bonus for users concerned about electrical safety.
Overview of iUniker 27W PD USB-C Power Supply for Raspberry Pi 5
The iUniker 27W PD USB-C Power Supply is designed to cater to the needs of Raspberry Pi 5 users. At $10.99, it offers a more powerful solution with a variety of output voltage options ranging from 5.1V at 5A to 15V at 1.8A, which allows for versatility depending on the user’s requirements. This power supply utilizes GaN technology, ensuring it remains compact while delivering high power efficiently. The inclusion of over-voltage and over-current protection adds a layer of safety, making it a robust choice for users looking to maximize their Raspberry Pi 5's performance.
Compatibility
The compatibility of each power supply is a crucial aspect to consider. The CanaKit power supply is exclusively compatible with the Raspberry Pi 4, making it a specialized product for that model. On the other hand, the iUniker power supply is compatible with the Raspberry Pi 5 in both 4GB and 8GB configurations. This broader compatibility may appeal to users who are either upgrading to a Raspberry Pi 5 or require a versatile power supply that can cater to multiple voltage needs. Therefore, if you own a Raspberry Pi 5, the iUniker power supply is the clear choice due to its compatibility with this newer model.
Performance and Stability
In terms of performance, the CanaKit power supply delivers a steady 3.5A, which is adequate for the Raspberry Pi 4, ensuring that the device operates smoothly without power interruptions. The added noise filter enhances stability, making it ideal for applications that demand consistent performance. Conversely, the iUniker power supply offers up to 27W of power with various output levels, providing more options for power management and device performance. This makes it suitable not only for the Raspberry Pi 5 but also for other devices needing different voltages. Thus, for users seeking flexibility and potentially higher performance, the iUniker supply stands out.
Build Quality and Safety Features
Both power supplies prioritize safety and build quality, although they approach it differently. The CanaKit power supply is UL Listed, indicating that it has passed specific safety tests, providing peace of mind to users regarding electrical safety. It features a robust 18 AWG cable that ensures durability and reliable power delivery. On the other hand, the iUniker power supply incorporates GaN technology, which not only allows for a smaller form factor but also enhances performance stability. Additionally, it includes multiple protection features against over-voltage and over-current, making it a safe choice for those who value device protection.
Cable Length and Flexibility
When it comes to cable length, the CanaKit power supply provides a generous 5-foot cable, allowing for greater flexibility in positioning your Raspberry Pi device. This can be particularly beneficial in setups where the power outlet is not immediately adjacent to the Raspberry Pi. In contrast, the iUniker power supply comes with a shorter 120mm cable, which may limit placement options for some users. If having a long cable is a priority for your setup, the CanaKit power supply would be the more advantageous choice.
Pricing Comparison
The pricing between these two products shows a small but notable difference. The CanaKit power supply is priced at $9.99, while the iUniker power supply is available for $10.99. This makes the CanaKit about 9% cheaper than the iUniker. For budget-conscious users or those who only need a power supply for the Raspberry Pi 4, the lower price of the CanaKit may be appealing. However, for those who require the additional features and versatility of the iUniker, the extra cost might be justified.
Which should you buy?
Ultimately, the choice between the CanaKit 3.5A Raspberry Pi 4 Power Supply and the iUniker 27W PD USB-C Power Supply for Raspberry Pi 5 hinges on your specific needs. If you own a Raspberry Pi 4 and need a reliable, cost-effective solution, the CanaKit power supply is the better option due to its tailored design and lower price. However, if you are using a Raspberry Pi 5 and desire a more powerful and flexible power supply with advanced safety features, the iUniker is worth the extra investment. Each product serves its purpose well, making the decision dependent on which Raspberry Pi model you possess and your power requirements.

