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Rectangular black metal ATX power supply unit with fan and cable bundle

myVolts

myVolts ATX Power Supply for Dell Precision 380 390 T3400 K8956 N375P-00 SATA

SKU CH-PR2F-3T9HC

Replacement ATX power supply with reduced depth for Dell Precision 380, 390 and T3400 workstations

  • Product typeAT
  • Replaces legacy Dell Precision 380 390 T3400 units directly
  • Reduced 5.9 inch depth fits tight ATX chassis spaces
  • Input 115 230 volts suits global mains without switching
  • Over current and over power protection guards components
  • High efficiency low noise fan runs cooler and quieter

Replacement ATX Power Supply for Dell Precision

This ATX power supply replaces the original unit in Dell Precision 380, 390 and T3400 workstations. It delivers the standard rail voltages required by those systems, including +3.3 V at 11 A, +5 V at 12 A and dual +12 V rails at 8 A each. The reduced-depth chassis improves fit across compatible ATX form-factor cases.

Thermals Noise and Power Draw in Normal Use

The unit operates from 115 V or 230 V AC input at 50 Hz or 60 Hz and is rated for ambient temperatures from 0 °C to 50 °C under full load. A low-noise, low-ripple fan provides cooling while over-current and over-power protection circuits guard the outputs. Standby power is supplied at +5 VSB 2 A.

Behaviour Under Sustained Load

Continuous full-load operation is supported within the stated 0 °C to 50 °C temperature range. The dual +12 V rails and regulated minor rails maintain stable voltage delivery during extended workloads. Protection features remain active throughout sustained use to prevent damage from excessive current or power draw.

How it compares

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

Price $94.99
Cheaper than about 70% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeAT

Questions about this item

How do I install this ATX power supply in a Dell Precision 380 and which connector step is often missed?

Fit the unit using its reduced depth of 5.9" width by 3.4" height, connect the ATX 20+4 pin, the P4 12V 4-pin, three SATA 15-pin, three LP4 4-pin and one floppy 4-pin; the P4 12V 4-pin is the step most often forgotten.

What maintenance or replacement will this power supply need later?

The internal cooling fan is the only moving part; plan to clean dust from its intake or replace the fan when noise or airflow drops.

Which limit appears first under sustained full-load use?

The operating temperature ceiling of 0°C to +50°C on full load is the first limit reached; exceeding it triggers over-temperature protection.

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