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2 Pack Molex to 3 Pin or 4 Pin Fan Adapter Computer PC Case Fan Power Splitter Cable, 10 inch
Gavemi

2 Pack Molex to 3 Pin or 4 Pin Fan Adapter Computer PC Case Fan Power Splitter Cable, 10 inch

Bottom line: The 2 Pack Molex to 3 Pin or 4 Pin Fan Adapter Computer PC Case Fan Power ($7.59 on Amazon as of 2026-10-06): Three fan connectors per cable, six across the 2-pack; main trade-off: fans run at full 12V speed only, with no PWM or voltage control.

$7.59

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Buy on Amazon — $7.59 Compare to similar power supplies & cables

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.

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ Three fan connectors per cable, six across the 2-pack
  • ✓ Accepts both 3-pin and 4-pin PC case fans
  • ✓ Runs fans off PSU Molex power, freeing motherboard fan headers
  • ✓ 27cm (10.6 in) leads leave slack for routing behind the motherboard tray
  • ✓ Dense black sleeving suits clean, all-black builds

Cons

  • ✗ Fans run at full 12V speed only, with no PWM or voltage control
  • ✗ No RPM sense wire, so BIOS and software can't read fan speed
  • ✗ Full-speed fans can be louder than header-controlled setups
  • ✗ Needs a free Molex lead, and many newer PSUs include only a few

Manufacturer description

Out of motherboard fan headers? The Gavemi Molex to 3 pin or 4 pin fan adapter powers your PC case fans directly from your power supply's Molex lead. The pack includes two cables. Each one splits a single 4-pin Molex plug into three fan connectors that fit both 3-pin and 4-pin chassis fans. The wiring is kept simple on purpose. The Molex end and the fan ends each use only two live pins, which carry the 12V rail and ground. Your fans spin at full 12V speed as soon as the system powers on. That suits builds where you want steady airflow without setting BIOS fan curves. It also helps with older…

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SpecPicks Verdict

SpecPicks scored 2 Pack Molex to 3 Pin or 4 Pin Fan Adapter Computer PC Case Fan… using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies & cables category. Gavemi'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.

Frequently Asked Questions

Will this adapter work with 4-pin PWM case fans?

Yes. The fan connectors accept both 3-pin and 4-pin fans. Only 12V and ground are wired, so PWM fans get no control signal and run at full speed.

Can my motherboard or BIOS show fan RPM with this splitter?

No. The fan connectors are wired with only two pins (12V and ground) and have no tachometer wire, so fan speed can't be reported to the motherboard or monitoring software.

How many fans can I connect with the 2 pack?

Each cable splits one Molex plug into three fan connectors, so the two cables in the pack can power up to six case fans from two Molex leads.

How long are the cables?

Each cable is 27cm (10.6 inches) long and covered in dense black sleeving. Measure the distance from your PSU's Molex lead to your fans before you buy.

Why does the Molex connector only have two pins?

Case fans need only the 12V rail and ground, so the adapter uses just those two pins of the 4-pin Molex housing. It still plugs into a standard Molex peripheral connector from your power supply.

Key Features

  • Please note this 4-Pin Molex is actual 2-Pin but it still works fine on your computer, because only 2-pin in connector required for fixed Molex operated voltage of 12V.
  • Molex to 4 pin fan adapter supports 3Pin or 4Pin PC cooling fans.
  • Powers up to four PC chassis fans via molex connectors to provide internal chassis cooling.
  • Cable length is 27cm / 10.6 inch, quality high density black sleeving for all black appearance.
  • Connector A: 4 pin molex connector (actual 2 pin) B: 3pcs 4 pin fan connector(actual 2 pin)

Full Specifications

BrandGavemi
ColorBlack
ModelBQ-Molex-Fan/3
Cable Typemolex
Item ShapeRound
Unit Count2 Count
Connector A4 pin molex connector (actual 2 pin) B: 3pcs 4 pin fan connector(actual 2 pin)
Part NumberBQ-Molex-Fan/3
CompatibilityPC
Connector TypeMolex to 4 Pin Fan Adapter
Number of Pins4
Maximum Voltage12 Volts
Number of Items2
Special Featurefor 3 Pin 4 Pin PC Case
Connector Gendermolex to fan cable
Compatible Devices3 Pin 4 Pin PC Case Fan
Included ComponentsMolex to 4 Pin Fan Adapter Cable
Indoor Outdoor UsageIndoor, Outdoor
Connectivity Technologymolex to fan
Other Special Features of the Productfor 3 Pin 4 Pin PC Case

Ready to buy?

2 Pack Molex to 3 Pin or 4 Pin Fan Adapter Computer PC Case Fan Power Splitter Cable, 10 inch 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.

Buy on Amazon — $7.59

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

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2 Pack Molex to 3 Pin or 4 Pin Fan Adapter Computer PC Case Fan Power Splitter Cable, 10 inch
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