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Short black cable with white Molex plug splitting into four three-pin fan headers

Ruth's sister

Ruth's sister 4-Pin Molex to 3-Pin Fan Power Cable Adapter 12V 5V International Power Cord

SKU CH-9GMA-WC8EY

Converts a 4-pin Molex connector into two 5 V and two 12 V three-pin fan headers for speed control

  • Powers two fans at 12 V and two at 5 V from one Molex connector
  • 10 cm cable keeps internal routing tidy inside compact cases
  • White connectors deliver 12 V, black connectors deliver 5 V for speed choice
  • Single adapter splits one 4-pin Molex into four 3-pin fan headers
  • Supplied as one piece weighing 7 g for minimal added weight

Connecting 3-pin fans to Molex

This adapter converts a single 4-pin Molex male connector into four 3-pin male outputs. It provides two white connectors wired for 12 V and two black connectors wired for 5 V. The cable suits standard CPU or case fans that use a 3-pin power plug.

Speed control limited to voltage choice

Fans plugged into the 12 V leads run at full rated speed. Fans on the 5 V leads spin slower and quieter but cannot be regulated further by the motherboard. The adapter does not carry a PWM signal, so automatic speed curves are not possible with this wiring.

Short loom for tidy internal routing

At 10 cm the cable keeps excess length to a minimum inside compact cases. The moulded connectors seat firmly on Molex and 3-pin headers without blocking adjacent ports. Builders needing longer reach or PWM control will need a different cable assembly.

Highlights

  • Powers two fans at 12 V and two at 5 V from one Molex connector
  • 10 cm cable keeps internal routing tidy inside compact cases
  • White connectors deliver 12 V, black connectors deliver 5 V for speed choice
  • Single adapter splits one 4-pin Molex into four 3-pin fan headers
  • Supplied as one piece weighing 7 g for minimal added weight

Specifications

No published specifications for this item yet.

Questions about this item

Should I pick the 5 V or the 12 V connector for my fan?

Use the white 12 V connectors for full fan speed or the black 5 V connectors for slower, quieter operation.

What happens when I plug a fan into the 12 V lead?

The fan receives the full 12 V from the Molex supply and runs at its rated maximum speed.

Does the 4-pin Molex input limit the power my fans can draw?

The adapter passes the Molex rail’s 12 V and 5 V lines directly to each 3-pin output without added regulation.

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