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Two short black sleeved cables each splitting one 4-pin connector into two 4-pin connectors

Cable Matters 104040 4-Pin PWM Fan Splitter 2-Pack 4 Inches

SKU CH-AV4S-76VV4

A 2-pack of 4-inch PWM Y-cables that split one motherboard header into two fan connections for synchronized speed control

  • Refresh frequency4 in (10.2 cm)
  • Cable length32.8 ft (10 m)
  • Team affiliation2 Piece
  • Connector genderMale to Female
  • Conductor typeCopper Conductor
  • Seller noticeon product combined cancer reproductive, RoHS
  • Connect two PWM fans to one motherboard header for expanded cooling
  • 4-pin PWM signal split lets both fans run at identical speeds
  • Master fan RPM reported back to motherboard for synchronized control
  • Black-sleeved 4-inch Y cables keep the build tidy in open cases
  • Works with 3-pin and 4-pin fans from Corsair, Cooler Master, Noctua and Thermaltake

Dual 4-Pin PWM Fan Splitter 2-Pack

This 2-pack of Y cables connects two case fans to a single motherboard 4-pin header. Each splitter transmits the PWM signal to both fans so they spin at identical speeds under motherboard software control. The 4-inch black-sleeved cables suit compact builds and open cases.

Synchronised PWM Control and Low-Profile Routing

A master connector passes the RPM signal back to the motherboard while the slave connector omits that pin for tandem operation. Both 3-pin and 4-pin fans are supported, allowing mixed fan types on one header. The short 4-inch length keeps cable runs tidy without excess slack.

Two Splitters for Up to Four Fans Total

The pack provides two independent 1-to-2 splitters, enabling up to four fans from two motherboard headers. Builders needing more than four fans or longer cable runs will need additional splitters or a powered fan hub.

How it compares

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Price $14.99
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Specifications

Product
Brand nameApple
Model name104040 × 2
Product typeUSB 3.0
Product colorBlack
Display
Refresh frequency4 in (10.2 cm)
Ports & slots
Connector genderMale to Female
Size & build
Overall length< 1 in
Cable length32.8 ft (10 m)
Conductor typeCopper Conductor
More details
Team affiliation2 Piece

Questions about this item

How do I connect the 4-inch 4-pin PWM splitter to my motherboard header so both fans report speed correctly?

Plug the male 4-pin connector into the motherboard PWM header, attach the primary fan to the female connector that carries the RPM wire, and connect the second fan to the other female connector; the slave leg omits the RPM pin so the board reads one speed signal for both fans.

What upkeep will the black-sleeved copper-conductor splitter need after installation?

No scheduled maintenance is required; simply inspect the sleeved jacket and copper conductors during routine case cleaning and reseat the connectors if any become loose.

At what point does the 4-inch length become a limiting factor in a sustained-build scenario?

The 4-inch reach restricts placement to fans mounted close to the motherboard header; in larger cases or dual-radiator layouts the cable may not span the distance without adding an extension.

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