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Cable Matters ATX 24-Pin Motherboard Cable, 12 inches | ATX 24-Pin Extension, Motherboard Power Cable, Black
Cable Matters

Cable Matters ATX 24-Pin Motherboard Cable, 12 inches | ATX 24-Pin Extension, Motherboard Power Cable, Black

Bottom line: The Cable Matters ATX 24-Pin Motherboard Cable: Adds 12 inches of reach to short, rigid stock 24-pin ATX PSU cables; main trade-off: adds an extra connector joint in the main motherboard power path.

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

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

Pros & Cons

Pros

  • ✓ Adds 12 inches of reach to short, rigid stock 24-pin ATX PSU cables
  • ✓ Lets you route the 24-pin lead away from the CPU fan for clearer airflow
  • ✓ Clip-and-latch joint guards against accidental disconnections
  • ✓ Sleeved black cable with removable ties for cleaner cable dressing
  • ✓ Male end takes the PSU cable, female end plugs straight into the board

Cons

  • ✗ Adds an extra connector joint in the main motherboard power path
  • ✗ 12-inch length may add unneeded slack in compact cases
  • ✗ Covers only the 24-pin ATX lead; CPU and PCIe power extensions not included
  • ✗ Black sleeving won't match builds with a colored cable theme

Manufacturer description

The Cable Matters ATX 24-Pin Motherboard Cable adds 12 inches of reach between your power supply's 24-pin lead and the motherboard's main power connector. If your ATX power supply shipped with a short, rigid 24-pin cable that barely stretches across the case, this extension gives you the slack to route it cleanly instead of pulling it tight across the board. Plug the male end into your PSU's existing 24-pin cable, then plug the female end straight into the motherboard. The extra length lets you route the motherboard power cable away from the CPU fan, which helps keep airflow clear in a tower…

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SpecPicks Verdict

SpecPicks scored Cable Matters ATX 24-Pin Motherboard Cable using a rating × review-volume × price-fit model applied to published specs and reviews across the accessories category. Cable Matters's accessories 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 accessories 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

How long is the Cable Matters 24-pin ATX extension cable?

The cable is 12 inches long. It adds that length between your power supply's existing 24-pin cable and the motherboard's 24-pin connector.

How do I connect this extension between my PSU and motherboard?

Plug the male end into your power supply's 24-pin cable, then plug the female end directly into the 24-pin power connector on the motherboard.

Will this help with airflow and cable management in my case?

Yes. The extra length lets you route the motherboard power cable away from the CPU fan, which helps airflow in a tower case. It also comes with removable cable ties for dressing the cable.

Will the connection come loose while I'm building?

The extension has a clip and latch that lock the connection in place to prevent accidental disconnections, and the extra slack reduces strain on the connectors.

Does it extend the CPU 8-pin or GPU power cables too?

No. It extends only the 24-pin ATX motherboard power connection. CPU (EPS) and PCIe graphics card power cables need separate extensions.

Key Features

  • ATX to motherboard extension cable lengthens the connection between an existing power supply and the 24 pin connection on a motherboard
  • 24 pin power cable extends the power connector from a ATX power supply to a motherboard power connection to provide strain relief on the connections of your computer case components
  • Cable management solution to route the motherboard power cable away from a CPU fan to improve air flow in a tower case; Male end connects to the power cable of the PSU and female end plugs directly into the motherboard
  • PC builder essential 24 pin cable for ATX power supplies that ship with a short and rigid 24 pin ATX power cable
  • Sleeved 24 pin extension cable has removable cable ties for dressing the cable and a clip and latch for a secure connection to prevent accidental disconnections

Full Specifications

BrandCable Matters
ColorBlack
Gauge18
Model104039-BLK
Wattage270 watts
Cable TypeATX Power Cable
Item ShapeRound
Model Name24-Pin ATX Power Supply M/F Extension Cable
Unit Count1 Count
Part Number104039-BLK
CompatibilityPC
Connector Type24 Pin ATX
Number of Pins24
Outer MaterialBraided Sleeve
Maximum Current22.5 A
Maximum Voltage12 volts
Number of Items1
Special FeatureTangle Free
Connector GenderMale-to-Female
Compatible DevicesPersonal Computer

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Cable Matters ATX 24-Pin Motherboard Cable, 12 inches | ATX 24-Pin Extension, Motherboard Power Cable, Black
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