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12V 1.25A 15W Power Supply Charger Compatible with Echo Dot vs JUSTOP Black 700W Power Supply Unit ATX PSU With 120MM Quiet Fan

Updated August 2026The Lyai power supply is an economical choice for Echo devices, while the JUSTOP power supply is better suited for high-performance desktop systems.

The Lyai power supply is an economical choice for Echo devices, while the JUSTOP power supply is better suited for high-performance desktop systems.

Why 12V 1.25A 15W Power Supply Charger Compatible with Echo Dot is better

price

Lyai power supply is cheaper at £6.49

device compatibility

Compatible with multiple Echo models

safety features

Includes over-voltage and short-circuit protection

Why JUSTOP Black 700W Power Supply Unit ATX PSU With 120MM Quiet Fan is better

power output

JUSTOP provides 700W compared to Lyai's 15W

cooling mechanism

Features a 120mm quiet cooling fan

safety certifications

CE, FCC, UL, and TUV certified

Overall score

12V 1.25A 15W Power Supply Charger Compatible with Echo Dot
70
JUSTOP Black 700W Power Supply Unit ATX PSU With 120MM Quiet Fan
85

Specifications

Spec12V 1.25A 15W Power Supply Charger Compatible with Echo DotJUSTOP Black 700W Power Supply Unit ATX PSU With 120MM Quiet Fan
BrandLyaiJUSTOP
TypePower SupplyPower Supply
CompatibilityEcho DevicesATX PCs
ProtectionBasicAdvanced
CoolingNoneYes

Dimension comparison

12V 1.25A 15W Power Supply Charger Compatible with Echo DotJUSTOP Black 700W Power Supply Unit ATX PSU With 120MM Quiet Fan

Overview of the Products

In this comparison, we will examine the 12V 1.25A 15W Power Supply Charger Compatible with Echo Dot and the JUSTOP Black 700W Power Supply Unit ATX PSU. The former is priced at £6.49, while the latter comes in at £29.95. Each product serves distinct purposes, catering to different user needs and device compatibility.

The Lyai power supply is specifically designed for various Echo devices, while the JUSTOP power supply is tailored for desktop PC systems. Understanding these differences will help you determine which product suits your requirements best.

Compatibility

The Lyai power supply is explicitly compatible with several Echo devices, including Echo Dot (3rd, 4th, and 5th Gen) and Echo Show 5 (1st and 2nd Gen). This versatility makes it an ideal choice for users with multiple Echo devices in their homes. However, it is important to note that it is not compatible with earlier Echo models or other specific products such as Echo Plus or Echo Look.

In contrast, the JUSTOP power supply unit is designed for ATX desktop computers, adhering to the Intel ATX 12V v.2.3 and EPS 12V v.2.92 standards. This makes it suitable for a broad range of motherboards and CPUs, providing flexibility for PC builders. Therefore, if your focus is on smart home devices, the Lyai supply is preferable, while the JUSTOP is better for desktop PC setups.

Power Output

The Lyai power supply delivers a consistent output of 12V at 1.25A, totalling 15W of power. This steady output is crucial for maintaining the performance of Echo devices, helping to reduce voltage fluctuations and interruptions during use. The built-in safety features, including over-voltage and short-circuit protection, further enhance its reliability for everyday smart home applications.

On the other hand, the JUSTOP power supply boasts a robust 700W output, which is significantly higher than that of the Lyai product. This makes it capable of supporting high-performance components in a desktop PC, such as powerful CPUs and GPUs, making it a suitable choice for gaming or resource-intensive tasks.

Safety Features

Safety is paramount when it comes to power supplies, and both products incorporate various protective mechanisms. The Lyai power supply includes over-voltage, over-current, and short-circuit protection, ensuring that connected Echo devices are safeguarded during charging. This level of protection is particularly important for users who rely on their Echo devices for daily activities.

Conversely, the JUSTOP power supply is equipped with multiple safety features, including over-voltage protection, over-power protection, and thermal overload cut-off protection. With CE, FCC, UL, and TUV electrical safety certifications, it assures users of its safety standards. This extensive range of safety measures makes the JUSTOP power supply a reliable option for powering sensitive computer components.

Cooling Mechanisms

The Lyai power supply does not specify any cooling mechanisms, which is generally acceptable for low-power applications like charging Echo devices. The compact design and lower heat generation associated with its 15W output make cooling less of a concern for this product.

In contrast, the JUSTOP power supply features a 120mm quiet cooling fan designed to enhance airflow and maintain operational stability. This is particularly important for desktop power supplies that may run hotter due to higher power outputs. The quiet fan also ensures that users can work or game without being disturbed by excessive noise, making it a more efficient option for long sessions.

Cord Length and Flexibility

The Lyai power supply comes with a flexible 6ft (2m) power cable, providing ample length for positioning Echo devices in various locations around the home. This adaptability is particularly useful for users who wish to keep their devices connected while maintaining an aesthetically pleasing setup.

On the other hand, the JUSTOP power supply features a range of connectors, including a 24-pin main connector and various SATA and Molex connectors. However, the specific length of these cables is not detailed in the product description. While it offers versatility through multiple connections, the lack of specified lengths may limit ease of installation in certain cases compared to the Lyai’s clearly stated cord length.

Price Point

The Lyai power supply is priced at £6.49, making it an economical choice for users who require a reliable charger for their Echo devices. This affordability is appealing for those looking for a budget-friendly solution for powering smart home devices without sacrificing essential features.

In contrast, the JUSTOP power supply, at £29.95, represents a higher investment. However, this price reflects its higher power capabilities and enhanced features, making it suitable for users building or upgrading desktop systems. Depending on your specific needs, the added cost may be justified for those requiring a more powerful and versatile power supply.

Target Audience

The Lyai power supply is ideal for users who own multiple Echo devices and are looking for an affordable, reliable charging solution. Its compatibility with a range of Echo models and built-in safety features cater to the average consumer's needs effectively.

In contrast, the JUSTOP power supply targets PC builders and gamers looking for a robust power supply to support high-performance components. With its higher wattage and extensive safety certifications, it is tailored for users who demand reliability and performance from their desktop systems.

Which should you buy?

Ultimately, the choice between the Lyai power supply and the JUSTOP power supply hinges on your specific needs. If you are looking for an economical and reliable charger for Echo devices, the Lyai power supply at £6.49 is an excellent option. However, if you require a powerful, feature-rich power supply for a desktop PC build, the JUSTOP power supply, priced at £29.95, would be the better investment. Assess your requirements carefully to ensure you select the most suitable power supply for your situation.

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12V 1.25A 15W Power Supply Charger Compatible with Echo Dot vs JUSTOP Black 700W Power Supply Unit ATX PSU With 120MM Quiet Fan | versusfinder