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Black sleeved Y-cable with two 4-pin PWM fan connectors and one motherboard header, ten inches long

Vszerda

Vszerda 10 inch Black Sleeved 4pin PWM 2-Fan Y Splitter Cable

SKU CH-NNS5-WXZVB

Connects two PWM fans to one motherboard header for synchronised speed control over a 10-inch sleeved cable

  • Connects two fans to one motherboard header
  • 10 inch black sleeved cable for tidy routing
  • PWM signal split keeps both fans at identical speed
  • Master plug reports RPM while slave omits monitoring pin
  • Three-pin fans run at full speed without PWM control

Splitter cable for dual-fan PWM control

This ten-inch Y-splitter connects two 4-pin PWM case fans to a single motherboard fan header. It passes the PWM signal to both fans so they spin at identical speeds under software control. The master connector carries the RPM signal back to the board while the slave connector omits that pin. Builders adding a second intake or exhaust fan can use this cable instead of occupying another header.

Black sleeved wiring with master and slave plugs

The cable is wrapped in black sleeving for a tidy appearance inside the case. One branch ends in a full 4-pin plug that reports speed to the motherboard; the other branch uses a 3-pin plug that receives the same PWM drive but does not send RPM data back. This arrangement keeps both fans synchronised while preventing signal conflicts on the header. The ten-inch length reaches most fan positions in standard chassis without excess slack.

PWM header dependence and three-pin fan limitation

Speed control only works when the motherboard header actually outputs a PWM signal; some 4-pin headers run at fixed voltage instead. If a connected fan has a 3-pin connector it will run at full speed because it cannot accept PWM modulation. Only the fan on the master 4-pin branch is monitored, so the second fan's actual speed is not reported. Users must verify header capability in their motherboard documentation before relying on variable-speed operation.

Highlights

  • Connects two fans to one motherboard header
  • 10 inch black sleeved cable for tidy routing
  • PWM signal split keeps both fans at identical speed
  • Master plug reports RPM while slave omits monitoring pin
  • Three-pin fans run at full speed without PWM control

Specifications

No published specifications for this item yet.

Questions about this item

Does the 4-pin PWM header on this splitter pass the speed signal to both fans?

Only the 4-pin fan connector sends the RPM signal back to the motherboard; the 3-pin connector omits that pin so both fans run at the same PWM speed but only one is monitored.

How much clearance do I need for the 10 inch cable run between the motherboard header and the two fan positions?

The assembly measures 10 inches end to end, so plan the routing from the motherboard fan header to each fan mount with that total length in mind.

What is the correct way to attach the master and slave plugs so the motherboard reads the right RPM?

Plug the fan you want monitored into the 4-pin master connector and the second fan into the 3-pin slave connector; reversing them will report the wrong fan speed.

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