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Black rectangular fan hub with eight three-pin headers, a Molex power plug and a silver control knob

EN-Labs

EN-Labs TX3CO8D 8-Port Fan Hub Splitter with Knob Controller

SKU CH-F9EV-V1YTV

Connects eight 3-pin or 4-pin fans to one Molex power source and adjusts all speeds together from zero to 100 percent with a single knob

  • First connectorMolex 4pin
  • 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 TX3CO8D 3pin fan speed controller is suitable for 12
  • Controls up to eight fans from a single knob
  • Adjusts speed continuously from zero to 100 percent
  • Powers all channels through one Molex connector
  • Compatible with both 3-pin and 4-pin fans via voltage regulation
  • Supports 12 V total current up to 3 A across all ports

8-Channel Fan Hub with Knob Control

The EN-Labs TX3CO8D is an internal fan hub that connects up to eight 3-pin or 4-pin fans to a single Molex 4-pin power source. A front-mounted knob adjusts the voltage for all connected fans simultaneously across a 0% to 100% range. It is built for enthusiasts who want manual, unified speed control over multiple case or component fans without software.

Replaces Motherboard Headers and Software Curves

This hub replaces the need for multiple motherboard fan headers or splitters that rely on PWM signals the board may not provide. The jump is worth it when your board lacks enough 3-pin or 4-pin headers, or when you prefer a single physical dial over BIOS curves or desktop utilities. It draws power directly from the PSU via Molex, bypassing header current limits entirely.

Check Molex Availability and Fan Voltage Needs

Verify your power supply has a spare Molex 4-pin connector to feed the hub. Confirm your fans are 12 V models compatible with voltage-based speed control; the hub does not output PWM signals, so 4-pin fans will run in voltage mode only. The total combined draw across all eight channels must not exceed the rated 3 A limit.

How it compares

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

Price $8.99
Cheaper than about 90% of the 7,839 comparable items (median $14.99).

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Specifications

Product
Brand nameEN-Labs
Model nameTX3CO8D
Product typeFan speed controller
Ports & slots
First connectorMolex 4pin
Second connector8 x TX3 3pin fan header
Connector count9

Questions about this item

Does the TX3CO8D need a Molex 4-pin power connector from the PSU?

Yes, the hub draws all power through a single Molex 4-pin female connector from the PSU.

How do I set the fan speeds once the eight 3-pin headers are plugged in?

Turn the single front-mounted knob; every connected fan changes speed together from 0% to 100%.

What is the total current limit I must stay under when all eight fans are running?

The combined draw for all eight channels must not exceed 3 A at 12 V.

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