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Compact rectangular fanless ATX power module with 24-pin connector and cables

myVolts

myVolts 19 V 200 W fanless ATX power supply

SKU CH-AVP3-NG545

Fanless 200 W ATX module converts 19 V DC input to standard PC rails with over-voltage and short-circuit protection

  • Product typeAT
  • Fanless design delivers completely silent operation
  • Accepts 16 V to 24 V DC input for flexible power sources
  • 200 W output supports standard ATX components
  • Over-voltage and short-circuit protections safeguard hardware
  • Compact 155 mm × 35 mm × 20 mm module fits tight spaces

Fanless 19 V DC-to-ATX module

This 200 W power module converts a 16 V to 24 V DC source into standard ATX voltages for internal computer components. It suits builders assembling silent industrial PCs or compact systems where a conventional AC supply is impractical.

Installing the 155 mm board

The unit measures approximately 155 by 35 by 20 mm and includes a 24-pin ATX connector, 12 V AUX lead, Molex, SATA, and floppy power cables. Ensure the 19 V DC source can deliver 12 A and verify polarity before powering the board to avoid triggering protection circuits.

Steady output under continuous load

Efficiency is rated at 85 percent or higher across the 0 °C to 40 °C operating range. Over-voltage protection shuts down rails at 1.5 times nominal voltage, while short-circuit protection closes the output instantly, maintaining stable rails during sustained operation.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $37.99
Cheaper than about 93% of the 10,869 comparable items (median $142.99).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Product typeAT

Questions about this item

How can I confirm the module is delivering stable rails after wiring it up?

Measure the 3.3 V rail between 3.14 V and 3.47 V, the 5 V and 5 VSB rails between 4.75 V and 5.25 V, and the 12 V rail between 11.40 V and 12.6 V; ripple should stay at or below 50 mV on 3.3 V and 5 V and 120 mV on 12 V.

Which cables and connectors ship with the unit, and what must I source myself?

The box includes the power module, a 24-pin ATX to 12 V AUX cable, a 4-pin Molex lead, a SATA power lead and a 4-pin floppy drive connector; you must supply a 16–24 V DC source capable of 12 A at 19 V and any additional ATX extensions your build requires.

The spec sheet lists several output rails — which ones matter for choosing the right capacity?

The module provides +3.3 V up to 10 A peak, +5 V up to 10 A peak, +12 V up to 8 A peak, 5 VSB up to 2.5 A peak and -12 V up to 0.15 A peak; match your component draw to those limits rather than the 200 W label alone.

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