myVolts 320 W TFX power supply for Dell Liteon PS-5251-5

TFX 320 W replacement PSU

This TFX form-factor power supply delivers 320 W of continuous power for Dell desktops that use the Liteon PS-5251-5 unit. It fits slimline and small-form-factor chassis where a standard ATX PSU will not install. The 80 mm cooling fan draws air through the compact housing to keep components stable under load. Input voltage ranges from 100 to 240 V for worldwide compatibility.

Suitable for SFF Dell upgrades

The unit suits owners of compatible Dell OptiPlex, Vostro or Inspiron small-form-factor systems needing a direct swap for a failed or undersized PSU. It provides the 20+4 pin motherboard, 4-pin CPU, two Molex, floppy and two SATA connectors required by those platforms. Builders working in standard ATX cases or needing higher wattage for discrete graphics cards should look elsewhere. The 320 W ceiling limits headroom for power-hungry add-in cards.

320 W output rating

The single specification that decides fit is the 320 W maximum output, which replaces Dell units originally rated at 200, 250, 275, 300 or 350 W. If the target system demands more than 320 W under full load, this PSU cannot sustain it and a higher-capacity TFX unit must be sourced. Verify the Dell service tag against the PS-5251-5 part number before purchase.