4 Pin Fan Adapter Molexes of 2025
Best Choice1
PNGKNYOCNPNGKNYOCN 3-Pin Fan to 4-Pin Molex Pass-Through Power Adapter Cable, 4-pin Molex/IDE to 3 Pin CPU Fan Power Cable（2-Pack）
Main highlights- Solve the problem of insufficient 3Pin interface ports on the PC motherboard.
- Note: The 3-pin fan connector is only 2 pins/wire (no tachometer pin/wire) and the fan will run at maximum speed
- Connector 2: 2 x 3-pin Fan (Internal) Male
- Connector 1: loop-through 4-pin Molex connector (with male and female connections)
- 3 pin ATX fan to 4 pin Molex connector cable fan power adapter
9.8Exceptional
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Value for Money2
CRJ ElectronicsCRJ 3-Pin Fan Header to 12V 4-Pin Molex Power Adapter Cable - 12 Inch (30cm), Black Sleeved - Power Peripheral Molex Devices From Fan Headers
Main highlights- Total cable length (including connectors) is 12 inches (30cm)
- RoHS Compliant. Each cable is constructed with all black connectors and high density black sleeving for minimal wire visibility.
- NOTE: Please take care to align the pins when making the 4-pin peripheral connection as they are under some tension from the sleeving.
- Designed specifically to eliminate the need for a power supply 4-pin peripheral molex connection due to the high output current fan headers found on many modern ATX motherboards.
- Compatible with 4-pin peripheral molex power water pumps and other 12V input devices (please exercise due diligence to avoid damage from current overdraw and disable 3-pin fan speed control in BIOS to ensure 12V output from the fan header)
9.7Exceptional
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3
Gavemi2 Pack Molex to 3 Pin or 4 Pin Fan Adapter Computer PC Case Fan Power Splitter Cable, 10 inch
Main highlights- Powers up to four PC chassis fans via molex connectors to provide internal chassis cooling.
- 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.
- Connector A: 4 pin molex connector (actual 2 pin) B: 3pcs 4 pin fan connector(actual 2 pin)
- Cable length is 27cm / 10.6 inch, quality high density black sleeving for all black appearance.
9.4Excellent
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4
OPSFALCON2 Pack 4-Pin (Actual 2-Pin) Molex to 3 Pin 12V PC Case Fan Power Adapter Cable, 3-Pin or 4-Pin (PWM Connector) to Molex Computer Case Fan Power Adapter Cable
Main highlights- Use to connect any 3pin or 4pin (PWM Connector) fan to a 4pin molex connector
- High density black sleeving cable, 10 inch length
- Fans will be operated at the fixed Molex voltage of 12V
- 4 Pin Molex to 3 pin 12V PC case fan power adapter cable, Please note this 4-Pin Molex is actual 2-Pin but it still works fine on your computer
- 2 Pack 4-Pin (Actual 2-Pin) Molex to 3 Pin 12V PC Case Fan Power Adapter Cable, 3-Pin or 4-Pin (PWM Connector) to Molex Computer Case Fan Power Adapter Cable
9.3Excellent
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5
CRJ ElectronicsCRJ 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 4-Pin Peripheral Molex Power Connector (12V - Full Speed)
Main highlights- 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)
9.1Excellent
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6
OPSFALCONOPSFALCON 2 Pack 4-Pin Molex (Actual 2-Pin) to 2 x 3 Pin / 4 Pin PMW 12V PC Case Fan Power Adapter Cable, 3-Pin or 4-Pin (PWM Connector) to Molex Computer Cooler Cooling Fan Splitter Y Power Cable
Main highlights- Power two 3pin or 4pin (PWM Connector) PC case fan with a 4pin molex connector
- Please note this 4-Pin Molex is actual 2-Pin but it still works fine on your computer
- High density black sleeving cable, 10 inch length, cable is backwards compatible with standard 3-pin fans, Fans will be operated at the fixed Molex voltage of 12V
- 4 Pin Molex (Actual 2-Pin) to 2 x 3 pin / 4 Pin 12V PC case fan splitter Y power adapter cable
- 2 Pack 4-Pin Molex to 2 x 3 Pin / 4 Pin PMW 12V PC Case Fan Power Adapter Cable, 3-Pin or 4-Pin (PWM Connector) to Molex Computer Cooler Cooling Fan Splitter Y Power (Molex-3Pin/4Pin Cable (Splitter))
8.9Very Good
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7
PNGKNYOCNPNGKNYOCN 4-Pin Molex to 4 x 4 Pin Fan Connector Cable (Power 4 Fans from 1 Molex Connection!) 2X12V / 2X5V for CPU PC Case Fan（2-Pack）
Main highlights- Use to connect any 4pin fan to a 4pin molex connector,The cable can add up to 4 fans(2 fans for 12V DC and 2 for 5V DC )
- Note: The 4-pin fan connector is only 2 pins/wire (no tachometer pin/wire) and the fan will run at maximum speed
- Great for powering multiple high-wattage fans
- Fan adapter. 12v / 5v. Use connectors of different voltages to control the fan speed.
- 4 Pin Molex: Four 3/4-Pin Male Fan Connectors (Compatible With Both 3-Pin And 4-Pin Fans)
8.6Very Good
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8
JstincalMolex to 3Pin / 4Pin Fan Adapter, Molex Fan Cable, 4Pin Molex (Actual 2-Pin) to 4 x Fan Splitter Cable, PC Fan Power Adapter Cable for 12V 3-Pin / 4-Pin PC Case Fans, 11.8in
Main highlights- Package: You will get 2PCS of Molex to 3pin / 4pin fan adapter cables.
- Notice: Our 4-Pin Molex is actual 2-Pin but it still works fine on your computer, because only 2-Pin is required for 12V PC fans. Our fan splitter adapter cables used to power PC case fans, does not support PWM speed regulation.
- Function: Use one Molex plug to power up to 4pcs 3pin or 4pin computer PC case fans, money saving and help you organize your PC case cables. (Fans will be operated at the fixed Molex voltage of 12V).
- Connector A: 4-Pin (actual 2-Pin) IDE Molex connector; Connector B: 4 x 3-Pin / 4-Pin PC case fan connectors.
- Cable Length: 30cm / 11.8inch. Material: High quality black sleeved cable.
8.5Good
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9
SDTC TechSDTC Tech Molex to Fan Power Splitter Cable, 2 Pack 4-Pin IDE to 3X 4-Pin Fan Connector Black Sleeved Y Type Extension Power Cable Compatible with 3-Pin/4-Pin PC Case Fans - 27 cm / 10.5 inch
Main highlights- The Y type fan splitter Adapter used to power PC case fans, does not support PWM speed regulation.
- Molex Connector (2 pin) to PSU, Fan Connector (2 pin for powering) compatible with 3pin and 4pin PC fans.
- High quality black sleeved cable, 24AWG, tinned copper conductor, length is approx 27cm / 10.5 inches.
- Fans will be operated at the fixed Molex voltage of 12V.
- 4-Pin IDE Molex to 3x Fan Connector Power Splitter Cable, to realize 3 PC fans powered by 1 interface.
8.4Good
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10
YiKaiEnYiKaiEn DC Power Supply Plug to Molex 4-Pin PC Fan Power Adapter Cable 11.8inch
Main highlights- Use a Variety of DC Power Supplies to Control Desired Fan Speed (for Example: 5V for Silent, 12V for Full Speed)
- Output: 3/4-Pin Type-D Male Fan Connector (Specialized Fan Connector Is Compatible With Both 3-Pin And 4-Pin Fans)
- Input: Female 5.5mm OD x 2.1mm ID DC Plug Socket.
- Change the 4 Pin Molex to DC interface power supply.
- Cable Length (Excluding Connectors): 11.8" / 30cm
8.3Good
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