We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Compact green circuit board module with 24-pin ATX connector and DC input cables

myVolts

myVolts 12V 300W AT Power Supply Module

SKU CH-Z5QV-GDXK6

AT power module delivers 300 W from 12 V DC for mini-ITX and 1U cases with full protection and 24-pin ATX cable

  • TypeAT
  • Industrial solid capacitors enable stable operation up to 55 °C
  • 300 W output from a 12 V DC input with 85 % efficiency
  • Over-current and short-circuit protection safeguards connected components
  • Compact 154 × 35 × 15 mm board fits mini-ITX and 1U cases
  • 24-pin ATX cable plus 20-pin adapter allows direct plug-and-play installation

AT 12V 300W Power Module for Compact Systems

The myVolts AT power supply module delivers 300W from a 12V DC input, targeting builders of mini-ITX, 1U and embedded systems such as HTPCs, POS terminals and network servers. It ships with a 24-pin ATX cable, a 24-to-20-pin adapter, a DC input lead and an AUX cable for direct connection.

12V DC Input Range and 85% Efficiency Limit

The module accepts 11.4 to 12.6V DC at up to 25A, so it must be paired with an external adapter that can sustain that current. Efficiency is rated at 85%, meaning roughly 45W of heat must be dissipated inside the chassis under full load. Operating temperature is specified from 0 to 55°C.

Replaces Internal ATX PSUs in Space-Constrained

This board replaces a full-size ATX power supply when case volume or mounting points prevent standard units from fitting, such as in 1U racks or thin mini-ITX enclosures. The jump is worth it only when the external 12V adapter can be accommodated and the 300W ceiling covers the system’s peak draw.

Highlights

  • Industrial solid capacitors enable stable operation up to 55 °C
  • 300 W output from a 12 V DC input with 85 % efficiency
  • Over-current and short-circuit protection safeguards connected components
  • Compact 154 × 35 × 15 mm board fits mini-ITX and 1U cases
  • 24-pin ATX cable plus 20-pin adapter allows direct plug-and-play installation

Specifications

TypeAT

Questions about this item

Should I choose the 12V 300W AT module or a different wattage for my mini-ITX build?

This module delivers 300W output from a 12V DC input (11.4-12.6V) with 85% efficiency. It requires a separate power adapter capable of at least 25A input current to reach full rated power.

What does the 300W rating mean when the module is installed in a 1U case?

At 85% efficiency the board draws up to 25A from the 12V adapter to supply 300W to the 24-pin ATX connector. The 154 x 35 x 15mm board fits 1U height and includes over-current and short-circuit protection for stable operation.

Does the 24-pin ATX connector follow the standard ATX pinout or is it proprietary?

The module uses a standard 24-pin ATX output and ships with a 24-pin to 20-pin cable for older boards. Input is via a DC jack using the supplied DC input cable; no proprietary connectors are used.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.