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Short black adapter cable with white four-pin Molex plug and black four-pin P4 plug

CablesWorld

CablesWorld 6in LP4 to P4 Auxiliary Power Cable Adapter ide cable

SKU CH-D5SA-3T7YH

Converts a Molex LP4 power connector to a 4-pin ATX 12V P4 plug for Pentium 4 motherboards

  • Converts LP4 power connector to P4 for motherboard compatibility
  • LP4 male plug connects directly to standard Molex power supply leads
  • P4 male plug delivers 12 V auxiliary power to Pentium 4 boards
  • Six-inch cable keeps routing tidy inside compact cases
  • Single adapter replaces missing P4 power cable on older systems

What this cable does

This six-inch adapter converts a standard LP4 Molex power connector into an ATX 12V P4 plug. It lets a power supply with only Molex leads feed the dedicated four-pin CPU socket found on Pentium 4 era motherboards.

Who should use it

Builders restoring or maintaining legacy Pentium 4 systems will find this adapter essential when the PSU lacks a native P4 lead. Anyone working on a modern platform or a board that already provides the required connector has no need for it.

How it fits the build

The short length keeps cable routing tidy inside cramped vintage cases and frees up a Molex connector for other peripherals. No extra power capacity is added; the supply must already deliver sufficient current on the 12 V rail for the processor.

How it compares

Measured against everything we stock in IDE/PATA Ribbon Cables, at today’s prices. Recalculated every night.

Price $4.99
Cheaper than about 96% of the 63 comparable items (median $24.99).

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Specifications

No published specifications for this item yet.

Questions about this item

What power connector must my PSU provide to use this LP4-to-P4 adapter?

Your power supply needs a spare LP4 (4-pin Molex) female connector to plug the adapter's male LP4 end into.

Will this adapter power an older Pentium 4 motherboard that still uses the 4-pin ATX12V connector?

Yes, the adapter's P4 male end fits the 4-pin ATX12V v2.x socket found on those Pentium 4 boards.

How can I confirm the adapter is delivering power once installed?

The system should POST and the CPU fan should spin, showing the motherboard is receiving 12 V through the adapter.

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