myVolts TFX 250W Power Supply for HP Compaq Presario CQ4000KL

Compatible Replacement for HP Compaq Presario

This TFX power supply is built as a direct replacement for the HP Compaq Presario CQ4000KL desktop. It delivers 250 W of continuous power in a slim form factor suited to small form factor chassis. The unit includes a 20+4 pin motherboard connector, a 4-pin CPU connector, three Molex connectors, a floppy connector and three SATA connectors. An 80 mm double ball bearing fan handles cooling.

Practical Limits of the TFX Form Factor

The TFX shape restricts this unit to cases designed for slimline or small form factor layouts. It cannot fit standard ATX enclosures or any chassis that requires a larger PSU body. Total output is capped at 250 W, so systems with high-end graphics cards or multiple high-power drives will exceed the available headroom. The 100 to 240 V input range covers global mains voltages without a selector switch.

Capacity and Headroom for Typical Builds

At 250 W this supply comfortably runs office productivity machines, media centres and entry-level custom builds with modest peripherals. It replaces older 200, 250, 300 or 350 W units and the manufacturer notes an upgrade path to 420 W for higher-demand configurations. Builders needing more than 250 W for discrete GPUs or large drive arrays should look for a higher-capacity TFX model.