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Grey rectangular controller with rotary dial and four-pin fan splitter cable attached

TESSAN 12V Fan Controller Splitter Cable 36W AC 100-240V DC 4-12V 3Pin 4Pin FC-3/4P

SKU CH-8P7V-73W51

Adjusts 3-pin and 4-pin fan speed from 4V to 12V with a 36W AC-powered rotary controller

  • ColorGrey
  • SpecificationsPlug Type: Type B, Size: USB-A, Brand: TESSAN, Color: Grey,
  • FeaturesUSB-A, 3 USB ports, 5 volts output, 15 amps, 1250 watts, 125
  • Adjust fan speed precisely with rotary dial from 4V to 12V
  • Connect up to four 3-pin or 4-pin fans using included splitter cable
  • Power multiple fans simultaneously with 36W maximum output capacity
  • Operate worldwide on AC 100-240V input without voltage converter needed
  • Install instantly with plug-and-play design requiring no internal wiring

Fan Controller with Four-Port Splitter

The TESSAN FC-3/4P is a plug-and-play speed controller for PC builders who want to run one to four 3-pin or 4-pin DC fans from a wall outlet. A rotary dial adjusts the output from 4V to 12V so you can balance airflow against noise without opening the case or configuring BIOS settings.

36-Watt Output and Voltage Range

The unit accepts AC 100-240V and delivers up to 36W at 3A on the DC side, which caps the total fan count and speed you can sustain. Four ports share that budget, so running four fans at 12V may exceed the limit; the knob lets you drop voltage to stay within 36W while keeping all ports active.

Replaces Motherboard Headers

This controller upgrades systems where the board lacks enough headers or cannot vary voltage low enough for quiet idle operation. It is not for builders who need PWM signalling, software monitoring, or more than 36W of combined fan power.

Highlights

  • Adjust fan speed precisely with rotary dial from 4V to 12V
  • Connect up to four 3-pin or 4-pin fans using included splitter cable
  • Power multiple fans simultaneously with 36W maximum output capacity
  • Operate worldwide on AC 100-240V input without voltage converter needed
  • Install instantly with plug-and-play design requiring no internal wiring

Specifications

BrandTESSAN
ColorGrey
SpecificationsPlug Type: Type B, Size: USB-A, Brand: TESSAN, Color: Grey, Style: Type B - 3 Prong, Voltage: 125 volts, Wattage: 1250 watts, Amperage: 15 amps, Item Shape: Rectangular, Unit Count Type: Count, Unit Count Value: 1, Portability: Portable, Item Weight: 0.25 pounds, Part Number: TS-161-US, Manufacturer: Zhuhai Tessan Power Technology Co., Ltd., Model Number: TS-161-US, Package Level: Unit, Connector Type: USB, Output Voltage: 5 volts, Item Dimensions: 79 L x 56 W x 65 H millimeters, Number of Items: 1, Power Plug Type: type_b_3pin_na, Special Feature: Compact, Total USB Ports: 3, Power
FeaturesUSB-A, 3 USB ports, 5 volts output, 15 amps, 1250 watts, 125 volts, 3 prong Type B plug, Compact design, Compatible with Home Theater, Smartwatches, Hair Dryer, Smartphones, Water Boiler, Mixer Grinder, Microwave Oven, Laptops, Radio, Tablets, E-Book Readers, PC, Juicer, Router, Fan, Projectors, Scanner, Modem, Cameras, Toaster, Set Top Box, Coffee Machine, Television, Printers, Heater, Lamp, Noise Maker, Monitors, Fax Machine, Rice Cooker, DVD Player, Air Conditioner, Light, Audio Sound System, Speakers, Game Consoles, Electric Fountain, MP3 Players, Freezer, Iron, Cellular Phones,

Questions about this item

Should I choose the FC-3/4P model or one of the other variants shown in the comparison table?

The FC-3/4P supports both 3-pin and 4-pin fan connectors, while the FC-2P only fits 2-pin and the FC-2/3/4P adds 2-pin support you may not need.

What does the 36W maximum power rating mean when I connect several fans to the splitter cable?

It limits the total combined draw of all attached fans to 36W at 12V, which equals 3A; the rotary dial reduces voltage down to 4V to lower each fan's speed and power use.

The controller takes AC 100-240V input — what does that cap in practice for my build?

It lets you plug the unit into any standard mains socket worldwide without a separate power brick, and the internal supply converts it to the 4V-12V DC range your fans require.

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