DC 12V 300W 24Pin ATX Mini ITX Pico PSU - Compact Gamer Power

Our review of the DC 12V 300W 24Pin ATX Mini ITX pico PSU looks at whether this compact module is the right choice for small gaming builds and low-power workstations. On bottom line, it is best for builders who need a dedicated external 12V supply to feed a Mini ITX motherboard and value a simple, efficient solution over a full-size internal power supply. The single biggest reason to buy is its focused design that delivers up to 300W from a 12V input while keeping installation tidy in cramped cases.

Key Features

• Wide input range: Accepts 11.4V to 12.6V so it works reliably with many external 12V supplies and battery setups.
• High output capacity: Rated at 300W and supports up to 28.0A incoming current at the low end of the input range for sustained power delivery.
• Built-in protections: Includes over current protection and short-circuit shutdown for the +3.3V, +5V and +12V rails to protect connected components.
• Solid efficiency: Works at around 85% efficiency, which reduces wasted heat in small chassis where cooling is limited.
• Temperature tolerance: Operates in typical workshop and home conditions from -5C to 55C and 45% to 75% humidity for reliable everyday use.

Who It's For

This pico PSU is aimed at compact PC builders, Mini ITX enthusiasts and retro console or industrial PC projects that require a dedicated 24-pin ATX connector but not a full ATX power brick. It suits anyone pairing a small case with a compatible external 12V supply or battery pack who needs a neat internal power module rather than a bulky PSU.

It is less appropriate for users who need wide-margin headroom for high-end gaming GPUs or heavy multi-drive NAS builds; those systems should look for a full-size PSU with larger efficiency and higher, multi-rail amperage for peak loads.

Pros & Cons

Pros

• Compact module fits Mini ITX enclosures and simplifies cable routing for small builds.
• Supports a useful input voltage window of 11.4V to 12.6V for flexibility with external supplies.
• Includes safety features like OCP and short-circuit shutdown to protect the motherboard and peripherals.

Cons

• 85% efficiency is respectable but not class-leading; expect some heat in constrained cases.

Specifications

Our Verdict

The DC 12V 300W 24Pin ATX pico PSU is a practical choice for Mini ITX and small-form-factor builders who need a compact, protected way to power a motherboard from a 12V source. It balances capacity and protection at an accessible efficiency level and represents good value for constrained builds that do not demand full-size PSU horsepower.

Frequently Asked Questions

Can this power a typical Mini ITX gaming board?
Yes, it can power many Mini ITX motherboards and modest CPU/GPU configurations as long as total system draw stays within the 300W and input current limits.

What protections are included?
The module provides over current protection and short-circuit shutdown for the +3.3V, +5V and +12V outputs to prevent damage in fault conditions.

What ambient conditions will it tolerate?
It is specified for operation from -5C to 55C and 45% to 75% relative humidity, suitable for typical indoor use.