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Black rectangular controller box with a silver rotary knob on top and nine cables — one SATA power lead

EN-Labs

EN-Labs TX3CO8S 8 Channel 3pin Fan Controller SATA Powered

SKU CH-Q9AK-R37N1

Eight-channel fan hub powers up to eight 3-pin or 4-pin fans from a SATA connector and adjusts all speeds together from 0 to 100 percent with a single knob

  • First connectorSATA
  • Second connector8 x TX3 3pin fan header
  • Connector count9
  • Product typeFan Speed Controller
  • DetailsType - 8 Channel Fan Speed Controller Fan quantity controlle
  • Key featuresEn-Labs TX3CO8S 3pin fan speed controller is suitable for 12
  • Control eight fans with one knob
  • Adjust speed from zero to 100 percent
  • Powered by SATA 15pin connector
  • Supports both 3-pin and 4-pin fans
  • Handles up to 12V 3A total current

8-Channel Fan Controller with SATA Power

The EN-Labs TX3CO8S is an internal power cable accessory that regulates up to eight 3-pin or 4-pin fans from a single manual knob. It draws 12 V power through a standard SATA 15-pin connector and distributes it across eight 3-pin headers. Total current capacity is 12 V 3 A shared across all channels, and each fan can be adjusted from off to full speed by voltage regulation.

Builders who want simple simultaneous speed control

This unit suits anyone who wants to lower noise or increase airflow across multiple fans at once without software or motherboard headers. It is not for systems that require independent PWM signalling per fan, automatic temperature curves, or per-channel current monitoring. Buyers who need individual fan profiles or motherboard-reported RPM feedback should look at a different solution.

Single-knob voltage regulation for all channels

The defining specification is that every connected fan is governed together by one analog knob using stepless voltage adjustment. There is no PWM output, no per-channel control, and no digital interface. If your build demands synchronised voltage-based speed changes for up to eight fans from a SATA power source, this controller matches that requirement.

How it compares

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

Price $9.99
Cheaper than about 80% of the 7,839 comparable items (median $14.99).

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Specifications

Product
Brand nameEN-Labs
Model nameTX3CO8S
Product typeFan Speed Controller
Ports & slots
First connectorSATA
Second connector8 x TX3 3pin fan header
Connector count9

Questions about this item

What power connector must my power supply provide for the TX3CO8S?

The controller draws power from a SATA 15pin connector, so your PSU needs a free SATA power lead.

Can I keep my existing 4-pin PWM fans and still control them with the single knob?

Yes, 4-pin fans are supported; the knob adjusts voltage for all eight channels simultaneously, but PWM signalling is not used.

How do I verify the fans are responding to the knob after installation?

Turn the knob and watch all connected fans spin up or down together from 0% to 100% speed.

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