CanaKit 3.5A Raspberry Pi 4 Power Supply vs iUniker 5V 4A USB-C Power Supply for Raspberry Pi
Updated August 2026 — iUniker 5V 4A USB-C Power Supply for Raspberry Pi leads on compatibility and build quality.
The iUniker power supply offers more features and versatility, making it the better choice for most users.
Why CanaKit 3.5A Raspberry Pi 4 Power Supply is better
Price
Both products are priced the same at $9.99.
Basic Functionality
CanaKit is specifically designed for Raspberry Pi 4.
Cable Length
Both have a 5ft cable.
Why iUniker 5V 4A USB-C Power Supply for Raspberry Pi is better
Power Output
iUniker provides 4A compared to CanaKit's 3.5A.
ON/OFF Switch
iUniker includes a built-in ON/OFF switch.
Compatibility
iUniker is compatible with multiple devices, not just Raspberry Pi 4.
Overall score
Specifications
| Spec | CanaKit 3.5A Raspberry Pi 4 Power Supply | iUniker 5V 4A USB-C Power Supply for Raspberry Pi |
|---|---|---|
| Current | 3.5A | 4A |
| Cable Type | 18 AWG | Standard |
| Switch | No | Yes |
| UL Listed | Yes | Yes |
| Warranty | None | Yes |
Dimension comparison
Overview of the Power Supplies
When it comes to powering a Raspberry Pi 4, both the CanaKit 3.5A Raspberry Pi 4 Power Supply and the iUniker 5V 4A USB-C Power Supply are solid choices, each priced at $9.99. Both options provide reliable power delivery, but they differ in features and design. Understanding these differences can help users choose the best power supply for their needs.
Design and Build Quality
In terms of design, both the CanaKit and iUniker power supplies boast high build quality. The CanaKit power supply features a 5-foot cable and uses a thick 18 AWG wire, which enhances its durability and insulation. On the other hand, the iUniker power supply also has a 5-foot cable, providing flexibility in placement. Its standout feature is the built-in ON/OFF switch, which allows users to easily power the Raspberry Pi on or off without unplugging, extending both the cable and port lifespan during frequent usage.
Power Delivery Capability
The CanaKit power supply delivers a current of 3.5A, while the iUniker power supply offers 4A, making it capable of handling up to 20W of power. This additional capability is particularly beneficial when using the Raspberry Pi 4 under heavy loads, as the iUniker power supply helps prevent undervoltage warnings, ensuring a stable performance. This power difference of 0.5A may not seem significant, but it can impact device performance during intensive tasks.
Safety Certifications
Both power supplies are UL Listed, which means they meet strict safety standards. The CanaKit power supply includes a noise filter for added stability, which is particularly important for sensitive electronic projects. The iUniker power supply also emphasizes safety with features like over-current, over-voltage, and short-circuit protection, ensuring peace of mind for users. This aspect makes both power supplies suitable for sensitive applications, but the added features in the iUniker offer a slight edge in safety.
Compatibility
The CanaKit power supply is specifically designed for the Raspberry Pi 4 and is not compatible with earlier Raspberry Pi models. In contrast, the iUniker power supply is broadly compatible; it works not only with Raspberry Pi 4 Model B (in all its variants) but also with Orange Pi 5/5B and other USB-C devices requiring 5V 4A power. This broader compatibility makes the iUniker a more versatile option for users with multiple devices.
Usage Context
For users who frequently work on projects or in environments like classrooms or labs, the iUniker power supply’s ON/OFF switch provides a significant convenience. This feature allows for easy power management without the hassle of unplugging cables. The CanaKit power supply, while reliable, lacks this functionality, which may be less convenient for users who need to power their devices on and off regularly.
Customer Support and Warranty
The iUniker power supply is backed by the brand’s customer satisfaction guarantee, which allows users to reach out for support anytime. This aspect can be crucial for those who might run into issues or have questions regarding their power supply. The CanaKit does not mention any warranty or customer support details, which may leave some users feeling less secure in their purchase.
Price Comparison
Both power supplies are priced equally at $9.99, making them economically similar choices for consumers. However, considering the features offered, such as the ON/OFF switch in the iUniker power supply and its higher current output, it provides more value for the same price. This makes the iUniker not just a competitor, but a potentially better investment for users seeking enhanced functionality.
Which should you buy?
In conclusion, if you are looking for a basic power supply specifically for the Raspberry Pi 4, the CanaKit 3.5A Raspberry Pi 4 Power Supply is a solid choice. However, if you value added features such as a higher current output, built-in ON/OFF switch, and broader compatibility with other devices, the iUniker 5V 4A USB-C Power Supply is the better option. Both are priced the same, but the additional features of the iUniker make it a superior choice for most users.

