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CRJ 4-Pin Molex to 4 PC Fan Power Adapter Cable - 12-inch (30cm), Black Sleeved - Power Up to Four 3-Pin & 4-Pin Computer Fans from an ATX Peripheral Molex Power Connector (12V - Full Speed)
CRJ Electronics

CRJ Electronics CRJ 4-Pin Molex to 4 PC Fan Power Adapter Cable

Bottom line: The CRJ Electronics CRJ 4-Pin Molex to 4 PC Fan Power Adapter Cable: Splits one ATX Molex peripheral line into four fan headers; main trade-off: no PWM or voltage control, so fans always run loud at full speed.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ Splits one ATX Molex peripheral line into four fan headers
  • ✓ Fits both 3-pin and 4-pin PWM fan connectors
  • ✓ Runs fans at constant full 12V, bypassing motherboard headers
  • ✓ Frees motherboard fan headers on older boards with only one or two

Cons

  • ✗ No PWM or voltage control, so fans always run loud at full speed
  • ✗ 12-inch (30cm) length is short for bottom-mounted PSU routing
  • ✗ No tachometer feedback, so BIOS cannot read fan RPM
  • ✗ Requires a spare Molex line, which many modern PSUs omit

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SpecPicks Verdict

SpecPicks scored CRJ Electronics CRJ 4-Pin Molex to 4 PC Fan Power Adapter Cable using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies & cables category. CRJ Electronics's power supplies & cables lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for power supplies & cables of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • Molex Fan Adapter: Power up to four 3-pin and 4-pin PWM computer cooling fans with 12V from a ATX power supply 4-Pin peripheral molex power connector.
  • High-Quality Materials: Constructed with premium high density black sleeving, this cable combines functionality with a clean, professional aesthetic.
  • Full Fan Speed: Cooling fans will be operated at their full 12V operating speed specification. Ideal for mission critical cooling applications.
  • Cable length (including connectors) is 12 inches (30cm)

Full Specifications

BrandCRJ Electronics
ColorBlack
Unit Count1 Count
Item Length12 inches
Model Number4026
CompatibilityPC
Input Voltage12 volts_of_direct_current
Connector TypeATX 4-Pin Fan, ATX 4-Pin Peripheral
Full Fan SpeedCooling fans will be operated at their full 12V operating speed specification. Ideal for mission critical cooling applications.
Mfr Part NumberCS001
Number of Items1
Number of Ports4
Molex Fan AdapterPower up to four 3-pin and 4-pin PWM computer cooling fans with 12V from a ATX power supply 4-Pin peripheral molex power connector.
Compatible Devices3-Pin Computer Fans, 4-Pin Computer Fans
High-Quality MaterialsConstructed with premium high density black sleeving, this cable combines functionality with a clean, professional aesthetic.
Full listing titleCRJ 4-Pin Molex to 4 PC Fan Power Adapter Cable - 12-inch (30cm), Black Sleeved - Power Up to Four 3-Pin & 4-Pin Computer Fans from an ATX Peripheral Molex Power Connector (12V - Full Speed)

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CRJ 4-Pin Molex to 4 PC Fan Power Adapter Cable - 12-inch (30cm), Black Sleeved - Power Up to Four 3-Pin & 4-Pin Computer Fans from an ATX Peripheral Molex Power Connector (12V - Full Speed) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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CRJ 4-Pin Molex to 4 PC Fan Power Adapter Cable - 12-inch (30cm), Black Sleeved - Power Up to Four 3-Pin & 4-Pin Computer Fans from an ATX Peripheral Molex Power Connector (12V - Full Speed)
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