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Small rectangular black PCB with 24-pin ATX and 4-pin CPU connectors, barrel input, no fan

Ruth's sister

Ruth's sister 150W 24-pin 12V DC-DC internal power cable

SKU CH-BR4J-R3XAF

Converts 12 V DC input to 150 W ATX output with 24-pin and 4-pin connectors, fanless and compact for Mini-ITX builds

  • Delivers 150W from a 12V source
  • Fanless design ensures completely silent operation
  • Industrial solid capacitors withstand harsh environments
  • 85% conversion efficiency reduces wasted power
  • Compact 55×38.5 mm board fits Mini-ITX and 1U cases

Compact 150W DC-DC board for mini-ITX

This 12V-to-ATX converter delivers 150W through a 24-pin motherboard connector and a 4-pin CPU plug. It accepts 11.4-12.6V DC via a 5.5×2.5mm barrel jack and draws up to 17A from an external adapter. The fanless design runs silently in tight mini-ITX or 1U chassis. Efficiency reaches 85% under load.

Builders fitting a pico-PSU into a small chassis

Suits integrators who need ATX power from a single 12V brick in space-constrained enclosures. Not for systems requiring more than 150W total draw or an internal AC inlet. Buyers without a suitable 12V external adapter should look elsewhere. The board omits active PFC and carries no 80 PLUS badge.

150W continuous output at 12V input

Rated output is 150W with a maximum input current of 17A at 12V. Conversion efficiency is specified at 85% or higher. Operating temperature range spans 15°C to 35°C. The unit measures 55×38.5×10mm and uses solid capacitors for durability.

How it compares

Measured against everything we stock in Internal PSU & Riser Cables, at today’s prices. Recalculated every night.

Price $24.99
Pricier than about 67% of the 7,839 comparable items (median $14.99).

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Specifications

No published specifications for this item yet.

Questions about this item

Should I pick the 150 W version or a lower-wattage model for my Mini-ITX build?

The board is rated for 150 W continuous output with a 12 V input range of 11.4 V to 12.6 V and a maximum input current of 17 A.

What does the 150 W rating actually deliver inside my case?

It provides DC-DC conversion at 85 % efficiency, supplying the 24-pin motherboard connector and 4-pin CPU connector from a single 12 V source.

What does the 5.5 mm × 2.5 mm DC jack limit in practice?

The jack accepts up to 17 A at 12 V, capping the usable power at the unit's 150 W rating.

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