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Multi-colour Molex splitter cable with 8-inch 3-pin fan lead and 4-inch extension

EN-Labs

EN-Labs IDEEX4-3PIN8 internal power cable 8in 3-pin 4in Molex 12V 18AWG 22AWG

SKU CH-B59R-ST05B

Adapts a Molex LP4 connector to an 8-inch 3-pin fan lead and adds a 4-inch Molex extension, both 12 V only

  • Connector count3
  • Connector genderMale to Male
  • Product typeCable Splitters
  • Product colorMulti-Color
  • Overall length6 in - 10 in
  • DetailsMolex 4pin LP4 Extesnion Cable Wire Gauge:18AWG Copper Cable
  • Powers 3-pin CPU or case fans from a Molex 4-pin supply
  • 8-inch 22AWG copper lead reaches fan headers cleanly
  • 4-inch 18AWG Molex extension preserves a PSU port for other devices
  • 12 V DC only — prevents damage to 5 V fans
  • Works with both 3-pin and 4-pin fan connectors

Molex to 3-pin fan adapter with port saver

This cable extracts a 3-pin TX3 fan power feed from a standard 4-pin Molex LP4 connector on the power supply. An additional 4-inch Molex male-to-female extension preserves the original port for another device. The assembly suits builders who need to run a 3-pin CPU or case fan from a 12 V DC rail without sacrificing a Molex connection.

Replaces a missing or damaged 3-pin fan header

Use this adapter when the motherboard lacks a spare 3-pin header or when an existing header has failed. The jump is worthwhile only if the fan operates on 12 V DC; the cable does not support 5 V DC fans, so owners of low-voltage models must look elsewhere.

Simple plug-in installation with one polarity check

Both Molex and 3-pin connectors are keyed, so they fit in a single orientation. The 3-pin plug carries only two wires and omits the tachometer pin, meaning fan-speed reporting will not function. Verify that the fan is rated for 12 V DC before powering the system.

How it compares

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Price $5.99
Cheaper than about 94% of the 7,839 comparable items (median $14.99).

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Specifications

Product
Brand nameEn-Labs
Model nameIDEEX4-3PIN8
Product typeCable Splitters
Product colorMulti-Color
Ports & slots
Connector count3
Connector genderMale to Male
Size & build
Overall length6 in - 10 in

Questions about this item

Will the 4-inch Molex LP4 male-to-female extension reach my drive without blocking the adjacent PSU connector?

The 4-inch 18AWG Molex LP4 extension adds just enough length to act as a port saver so the fan tap does not occupy the PSU socket.

Which wire do I leave unconnected when plugging the 3-pin fan male onto a 4-pin motherboard header?

The 3-pin male carries only two wires (12 V and ground), so the tachometer pin on the 4-pin header simply stays empty.

How often should I check the 22AWG fan tap wires for fatigue if the cable is routed behind a drive cage?

Inspect the 22AWG fan tap at each major hardware change; the finer gauge is more prone to work-hardening when bent in tight spaces.

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