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Black sleeved cable with Molex connector on one end and 4-pin fan connector on the other

EN-Labs

EN-Labs LP42TX425CM Molex to 4 Pin PWM 3 Pin Fan Power Adapter Cable 10 Inch Black Sleeved

SKU CH-Q8MW-Z4M10

Converts a Molex power connector to a 3-pin or 4-pin fan header delivering 12 V only with no PWM control

  • Cable length10 in (25.4 cm)
  • First connectorMolex IDE 4pin
  • Second connector4pin fan male (2pin tips)
  • Connector count2
  • Product typeFan power splitter cable
  • Product colorBlack
  • Powers 3-pin or 4-pin fans directly from a Molex PSU connector
  • Delivers 12 V DC through a two-wire power-only link
  • Black sleeved jacket protects wires and keeps builds tidy
  • Compact 10 inch length fits tight chassis routing
  • Simple plug-and-play adapter requires no motherboard PWM header

Power adapter for Molex-to-fan connections

The EN-Labs LP42TX425CM adapter cable converts a standard four-pin Molex power connector from a PSU into a four-pin fan header. It supplies 12 V DC power to a 3-pin or 4-pin PWM device such as a CPU cooler or case fan. The cable is 10 inches long and wrapped in black sleeving.

Check your fan header and PSU connectors

Verify that your power supply provides a free four-pin Molex output and that the target fan uses a standard three-pin or four-pin header. The adapter carries only two power wires, so the fan will receive constant 12 V without PWM speed control or tachometer feedback to the motherboard.

Thermals noise and power in normal use

The adapter itself draws negligible power and adds no audible noise because it contains no active components. Fan noise and thermal performance depend entirely on the connected cooler running at full 12 V speed. The black sleeving resists abrasion and keeps the 10-inch cable tidy inside the chassis.

How it compares

Measured against everything we stock in Internal PSU & Riser Cables, at today’s prices. Recalculated every night.

Price $3.99
Cheaper than about 96% of the 7,839 comparable items (median $14.99).

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Specifications

Product
Brand nameEN-Lab
Model nameLP42TX425CM
Product typeFan power splitter cable
Product colorBlack
Ports & slots
First connectorMolex IDE 4pin
Second connector4pin fan male (2pin tips)
Connector count2
Size & build
Overall length10 in / 25CM
Cable length10 in (25.4 cm)

Questions about this item

Does the package include only the adapter or are extra cables needed?

The box contains the single Molex-to-fan adapter cable; no additional cables are required for the connection.

Why does the LP42TX425CM have a four-pin fan plug but only two wires?

The four-pin connector carries only the 12 V power lines, so the fan runs at full speed without PWM control or RPM feedback.

What does the 12 V output mean for a fan connected through this adapter?

The fan receives constant 12 V from the PSU Molex connector, so it spins at maximum speed and cannot be regulated by the motherboard.

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