CRJ 4-Pin Molex to 3 PC Fan Power Adapter Cable - 12-inch (30cm), Black Sleeved - Power Up to Three 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 3 PC Fan Power Adapter Cable

Name: CRJ 4-Pin Molex to 3 PC Fan Power Adapter Cable - 12-inch (30cm), Black Sleeved - Power Up to Three 3-Pin & 4-Pin Computer Fans from an ATX
Brand: CRJ Electronics
SKU: B0D4SG9BFW

Bottom line: The CRJ Electronics CRJ 4-Pin Molex to 3 PC Fan Power Adapter Cable: Powers up to three 3-pin or 4-pin fans from one Molex peripheral connector; main trade-off: no PWM or voltage control — fans run at full speed only.

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By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-06

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. About the author →

Pros & Cons

Pros

✓ Powers up to three 3-pin or 4-pin fans from one Molex peripheral connector
✓ Runs fans at full 12V rated speed for maximum airflow
✓ Black high-density sleeving blends into a clean build
✓ 12-inch (30cm) reach for routing to multiple fan spots

Cons

✗ No PWM or voltage control — fans run at full speed only
✗ Full-speed 12V operation means louder, no quiet idle
✗ 12-inch length can be short for full-tower cable runs
✗ Ties up one Molex peripheral lead from the PSU

Manufacturer description

Power up to 3 case fans using this molex adapter cable. Doesn't interfere with your PC aesthetics with high density black sleeving and black connectors. Note that fan control is not supported, case fans will be operated at the molex 12v spec.

SpecPicks Verdict

SpecPicks scored CRJ Electronics CRJ 4-Pin Molex to 3 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 three 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

Brand	CRJ Electronics
Color	Black
Unit Count	1 Count
Item Length	12 Inches
Model Number	4018
Compatibility	PC
Full Fan Speed	Cooling fans will be operated at their full 12V operating speed specification. Ideal for mission critical cooling applications.
Mfr Part Number	4018
Number of Items	1
Molex Fan Adapter	Power up to three 3-pin and 4-pin PWM computer cooling fans with 12V from a ATX power supply 4-Pin peripheral molex power connector.
Compatible Devices	Personal Computer
High-Quality Materials	Constructed with premium high density black sleeving, this cable combines functionality with a clean, professional aesthetic.
Full listing title	CRJ 4-Pin Molex to 3 PC Fan Power Adapter Cable - 12-inch (30cm), Black Sleeved - Power Up to Three 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 3 PC Fan Power Adapter Cable - 12-inch (30cm), Black Sleeved - Power Up to Three 3-Pin & 4-Pin Computer Fans from an ATX Peripheral Molex Power Connector (12V - Full Speed) is vintage hardware; the used and vintage market on eBay carries most of the live inventory. Prices and condition vary by seller and move in real time, so we link the live listing rather than quote a cached price. It also has an Amazon listing — check it for current price and availability. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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