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A PCI-slot bracket with four three-pin fan headers and a Molex power plug

EN-Labs

EN-Labs PCITX3CO4D 4-Channel Fan Speed Controller internal power cable

SKU CH-X07T-MQAB2

Four-channel voltage regulator fits a PCI slot and lets you dial each 3-pin or 4-pin fan from off to 100 % via Molex power

  • First connectorMole 4pin
  • Second connector4 × 3pin Male
  • Connector count5
  • Product typeFan Speed Controller
  • DetailsType - PCI Slot 4 Channel Fan Speed Controller Fan quantity
  • Key featuresEN-Labs PCITX3CO4D fan speed controller is suitable all kind
  • Independent speed control for four fans via PCI-slot knobs
  • Each channel adjustable from off to 100% full speed
  • Voltage-based regulation works with any 3-pin or 4-pin fan
  • Powered by a single Molex connector, no motherboard headers needed
  • Manual knobs with off switch give instant, tactile fan tuning

Four-Channel Fan Controller for PCI Slot

The EN-Labs PCITX3CO4D installs in a full-profile PCI bracket and provides four independent channels to regulate 3-pin or 4-pin fans. Each channel draws power from a single Molex connector and handles up to 1 A. A front-mounted knob per channel lets you dial speed from off to full rotation.

Suited for voltage-controlled cooling setups

Builders who want manual, per-fan speed adjustment without software will find this controller straightforward. It is not for systems that require PWM signalling or motherboard-based fan curves, because the unit regulates voltage only and does not pass PWM control signals.

Stepless voltage regulation from 0 to 100

The regulator varies voltage continuously across the entire range, so each fan can be stopped, run at any intermediate speed, or spun at 100 percent. This single specification determines whether the controller matches fans that accept voltage control.

How it compares

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

Price $16.99
Pricier than about 55% of the 7,839 comparable items (median $14.99).

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Specifications

Product
Brand nameEN-Labs
Model namePCITX3CO4D
Product typeFan Speed Controller
Ports & slots
First connectorMole 4pin
Second connector4 × 3pin Male
Connector count5

Questions about this item

Will the EN-Labs PCITX3CO4D fit alongside my older PCI expansion cards?

The controller occupies a single full-profile PCI slot bracket and draws power from a Molex 4-pin connector, so it installs next to legacy cards without using a PCIe lane.

How can I verify each of the four channels is regulating speed correctly after installation?

Turn each knob from the OFF position through the 0% to 100% range and confirm the connected fan spins up smoothly and stops cleanly at the OFF detent.

Which cables and connectors come in the box, and what must I provide separately?

The unit includes the controller with four 3-pin male fan headers and a Molex 4-pin power plug; you supply the Molex lead from your PSU and the 3-pin or 4-pin fans you wish to control.

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