Best 12 V 4 Pin 2026

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Last Updated - 03.02.2026

Best Choice

01

Aideepen

Aideepen 4 Pin 12V PWM Fan Controller, Type-C 12V Power Supply, 4 Wire Fan Speed Controller with Backlight for PC Case, DIY Water Cooling Option

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9.6

Exceptional

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Main highlights

【Specifications】Power Connector: Type C; Power Supply: 12V; Support Power: 60W; Output Connector: 4-Pin (KF2510); Output Voltage: 12V
【Compact and Portable】Product dimensions: 4.5 × 4.5 × 3.1 cm. Thanks to its compact design, it is versatile and is suitable for various DIY projects, e.g. For case fans and DIY water cooling radiators.
Precise speed control: the PWM speed control controls the fan speed precisely, effectively reducing power consumption and noise.
PD/QC fast charging protocol: This PWM fan controller supports PD and QC fast charging technology and can therefore be operated with power supplies with fast charging protocol.
Note: This 12V type C model only supports power supplies with fast charging protocol that are explicitly marked "12V", such as Fast charging power banks and fast charging power supplies.
Backlight: The PWM fan controller has a backlight, which ensures good readability of the current values even in low light. (Switch on/off at the touch of a button)

15,99 €
Value for Money

02

XMSJSIY

XMSJSIY 12 V DC 5.5 mm x 2.1 mm Female to 4 Pin Male PWM Fan PC Cooler Fan Power Adapter Extension Cable for Computer Case -20 cm/7.8 Inches 2 Pieces

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10% Off
9.5

Excellent

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Main highlights

The DC5521 to 4 Pin PC Fan Cable is equipped with a standard injection molded DC5521 female connector and fan connectors that use a 24AWG sheathed wire with copper cores. The 4 pin connector uses solid needles that ensure a robust connection without the hassle of bent or broken pins
Small size, light weight, easy to carry, plug and play, easy to use. The DC power socket provides 12V DC power input and the output supports a 3-pin or 4-pin fan cable
Mainly used as expansion interface for CPU fans. Widely used in computer internal components such as LED fans or RGB fans, pumps and PC chassis
If the power cord of the PC cooling fan uses an external power supply, the lower the selected voltage, the slower the speed. If the voltage exceeds the rated voltage, the fan burns out. The rated voltage of a common fan is 12 V
DC 5.5 mm x 2.1 mm to 4-pin PWM fan extension cable serves as a converter that converts the DC 5.5 x 2.1 mm bus interface into a 4-pin computer fan plug. It provides a 12 V power supply for the cooling system that effectively addresses heat dissipation of network devices and PC fans

9,89 € 10,99 €(10% Off off)
03

Aukson

Aukson P35 Molex 4 Pin Male ATX 12V P4 Adapter - 4 Pin ATX to 4 Pin Molex Power Cable for Motherboard and IDE Devices

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9.2

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Universal use: this cable is ideal for all applications where a Molex connector needs to be converted to a P4 connector, such as upgrading older systems or replacing components.
High Current Stability: The adapter ensures a reliable and stable power supply for your CPU. It provides the power needed for smooth operation and prevents unexpected system failures.
Easy retrofitting: Perfect for connecting older power supplies with Molex plugs to modern motherboards with P4 connector. No need for a new power supply - just use the adapter cable.
DURABLE BUILD QUALITY The cable is made with high quality materials and ensures a durable and secure connection. The solid and well-insulated contacts ensure safe transmission of the current.
Adapter cable for retrofitting a P4 motherboard connector: This adapter cable allows you to convert a classic 4-pin Molex connector into a 4-pin ATX12V P4 connector. Ideal for powering motherboards that require a 4 pin ATX connector.

4,55 €
04

Xiatiaosann

Xiatiaosann Full Speed 12 V Step-Up USB Male to 4-Pin PC Fan Connection Cable with 4-Pin Female to 3 x 3 Pin & 4 Pin Splitter Braided Power Supply Cable 12 Inch (55 cm)

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8.9

Very Good

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Main highlights

PERFECT COMBINATION Our USB to 4 pin computer fan power adapter cable and the 4 pin computer fan female to 3x3 pin and 4 pin computer fan power adapter cable can be combined. In combination, you can connect a 4-pin computer fan and three 3-pin computer fans with a USB-A header (constant speed only).
Dimensions and specifications: the length of the product including connectors (approx. ): 55 cm / 22 inches; Thickness: Standard 1007-22 AWG.
Boost Function Inside the USB port there is a boost circuit, which can amplify the 5V current and output 12V 0.4A for full power operation. With this 12V step-up USB cable, you can power up to 4 computer fans at full speed via a conventional USB port.
Better Construction Our cables use all black injection molded connectors and high-density black sleeves to minimize the visibility of the cable and protect the core, and the structure of the braided wire body is not easy to break. The wire meets RoHS standard.
Applications It can be used to connect devices such as PC fans, fan hubs and speed controllers.

6,49 €
05

Leloco

Leloco Extension Cable, 10 Metres, 22 AWG, 4 Pin LED Strip, Extension Cable, LED Strip, Connection Cable, LED Cable, 12V-24V for SMD 3528 2835 5050 5630 LED Cable / Bell Wire etc

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8.7

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Wide application: application for wiring LED light strips, electrical equipment, transformers, bell wire, lamps and motor connection cables, etc.
SOLDERING MAKES IT BETTER If you try to connect this cable to a solderless connector or LED strip, you will get a stable connection by soldering the cable.
High quality and reliability: the cable is a 22 AWG 4 pin LED cable for maximum conductivity. It features a flexible, flame-retardant PVC jacket that is oxidation and ageing resistant, making it durable and reliable.
EASY TO USE Cut it to the length you want. Remove part of the outer plastic from the extension cable with the stripper and then connect it to your device.
DURABLE & FLEXIBLE The insulation is durable and flexible. The wire inside is stranded and therefore can withstand many bends without breaking.

7,49 €
06

Gebildet

Gebildet Full Speed 12V Voltage Step-Up USB to 3-Pin and 4-Pin PC Fan Sleeved Power Supply Cable (Pack of 2)

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8.4

Good

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Main highlights

With this USB adapter cable, you can power most 3-pin and 4-pin computer fans via a USB Type-A port.
Total cable length (including plug): 32 cm
RoHS compliant. This cable features all black connectors and a high density jacket for durability and minimal visibility of wires.
Cool a variety of electronic devices that output USB power after switching on (consoles, network devices, professional devices, etc.)
12V Voltage Increase Circuit Inside the USB case there is a voltage booster circuit that takes 5V and outputs up to 12V 0.4A for full power operation. Additional devices such as fan hubs and speed controller can also be used.

6,99 €
07

RUNCCI-YUN

RUNCCI-YUN 2 Pack PWM Fan Speed Controller, DC 0-12 V 4 Wire PC CPU Fan Speed Controller Switch for PC Case

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8.3

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

🏻The duty cycle is adjustable from 0% to 97%, and the speed regulation range is wide.
🏻By rotating the potentiometer, the fan speed can be easily adjusted.
The PWM frequency is 25 kHz, the single-channel PWM fan control board adopts the PWM speed regulation scheme, can adapt to most 12 V adjustable speed fans on the market.
Small size, simple to use, easy to install
Input voltage: 12 V

5,98 €
08

Lumonic

RGB LED IR Controller Wireless + 24Key Remote Control 72W 12V 6A

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8.2

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Operating voltage: 12 V, power: 72 W @ 12 V
Functions: adjust brightness (dimming) + change colours + select light effects
Device dimensions: 50 x 34 x 22 mm, remote control dimensions: 85 x 52 x 7 mm, power connection device: DC socket (5.5/2.1 mm) + cable 10 cm, connection LED: 4-pin socket
24Key RGB Controller 4-Pin; RGB, Connectivity technology: IR (Infrared)

7,60 €
09

Lumonic

RGB LED IR Controller Wireless + 24Key Remote Control 72W 12V 6A

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8.1

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Operating voltage: 12 V, power: 72 W @ 12 V
Functions: adjust brightness (dimming) + change colours + select light effects
Device dimensions: 50 x 34 x 22 mm, remote control dimensions: 85 x 52 x 7 mm, power connection device: DC socket (5.5/2.1 mm) + cable 10 cm, connection LED: 4-pin socket
24Key RGB Controller 4-Pin; RGB, Connectivity technology: IR (Infrared)

6,08 €
10

Sarini

Sarini Fan Speed Controller 12V 4 Pin PWM PC Case Fan Adapter Hub Power Supply with SATA Interface for 4 Fans

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13% Off
7.8

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Widely used in PC water cooling systems. Fan connector: 4 pin (3 pin, 2 pin not supported)
The maximum power of 60 W meets the requirements of multiple fans and the speed of high-performance fans.
The computer fan speed controller is powered by a SATA cable. Control 4 fans simultaneously via the button.
Made of plastic and metal materials for high reliability, low loss and low heat generation.
Fan speed controller with 1 button, full speed range from 0-100 to realize the heart of speed change.

6,99 € 7,99 €(13% Off off)