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Compact TFX power supply unit, matte metal casing, rear fan grille, cable bundle visible

myVolts

myVolts 300W TFX Power Supply for HP Compaq Presario CQ4000KL

SKU CH-YBMT-E7PBN

TFX 300W replacement PSU for HP Compaq Presario CQ4000KL with 20+4 pin, 4-pin CPU, 3x Molex, floppy and 3x SATA connectors plus an 80mm double ball bearing fan

  • Product typeAT
  • 300 W steady power runs older PCs and new builds
  • 80 mm double-ball-bearing fan keeps temperatures low
  • 20+4 pin, 4-pin CPU, 3 SATA and 3 Molex connectors cover every drive
  • 100 to 240 V input works worldwide without a switch
  • TFX form factor fits HP Compaq Presario CQ4000KL slimline cases

TFX power supply for HP Compaq Presario CQ4000KL

This 300 W TFX unit replaces the original power supply in the HP Compaq Presario CQ4000KL. It fits slimline and small form factor chassis that require the TFX footprint. The supply delivers 300 W of continuous power for systems previously equipped with 200, 250, 300 or 350 W units. Builders working on other platforms or larger ATX cases should choose a different form factor.

Sustained 300 W output

The supply is rated for 300 W steady output rather than a short-term peak, so it maintains rated power during extended workloads. An 80 mm cooling fan with double ball bearings provides airflow without the noise penalty of sleeve-bearing designs. Input voltage auto-ranges from 100 to 240 V, allowing worldwide operation without a voltage switch.

Connector complement determines upgrade fit

Included cables are a 20+4 pin motherboard connector, a 4-pin CPU connector, three Molex connectors, a floppy connector and three SATA connectors. If your build needs additional SATA or PCIe power leads beyond this set, this unit will not meet the requirement.

How it compares

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

Price $101.99
Cheaper than about 67% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeAT

Questions about this item

How loud is the 80 mm fan when the 300 W TFX unit runs continuously?

The double-ball-bearing 80 mm fan is designed for quiet, steady airflow during all-day operation.

Which cables must my HP Compaq Presario CQ4000KL already have to connect this PSU?

The unit provides a 20+4 pin motherboard connector, 4-pin CPU plug, three SATA, three Molex and a floppy lead.

Will this 300 W TFX supply work with the original 200 W or 250 W hardware in my CQ4000KL?

Yes, it replaces 200 W, 250 W, 300 W or 350 W units and supports the same Slimline and SFF form factor.

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