Replace Power ATX power supply 280 W grey

Replacement ATX supply for HP desktops

This Replace Power unit delivers 280 W continuous output with a 420 W peak rating and fits the HP A1253w, A1267c, A1268c, A1283w, A1300la and A1310n models. Its reduced depth of 5.86 inches helps it slide into tight chassis where a full-length ATX unit would not fit. An 80 mm fan provides cooling while keeping ripple and noise low. The unit ships new and carries ROHS and CE marks.

Suits owners restoring listed HP systems

It suits anyone replacing a failed original supply in one of the named HP desktops who needs the exact connector mix of 24-pin motherboard, 4-pin CPU, three SATA, two Molex and one floppy lead. Builders assembling a new custom system or upgrading a modern graphics card should look elsewhere because the 280 W continuous limit and lack of PCIe power connectors will not support current discrete GPUs or high-wattage CPUs. The fixed cable loom also rules out modular cable management.

Check chassis depth and connector needs

Before ordering, verify that your case can accommodate a supply 5.86 inches deep and that the motherboard uses a 20+4 pin main connector plus a 4-pin CPU plug. Confirm the AC mains in your region operates within 110 V or 220 V at 47 to 63 Hz, matching the unit's input range. Ensure the total system draw stays under 280 W continuous; the 420 W figure is a peak rating only.