Delinx 12V PC Fan Speed Controller, AC Plug with 2X 4-Pin Splitter Cable | 24W Power Adapter, Compatible 2/3/4-Pin, Case Cooling Project for PC Server Cabinet DVR TV Router Receiver Xbox Greenhouse
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Availability:
In Stock.
Arrives
Friday, Jul 24
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Features
- Fully Adjustable 3-12V Power Control Easily adjust the output voltage from 3V to 12V with the precision knob, directly controlling fan/pump speed, noise level, airflow, and power consumption. Ideal for silent cooling, moderate airflow, or full-speed operation based on your needs.
- Universal Compatibility with 12V Devices Comes with a 35cm DC5521 to dual 4-pin splitter cable, supporting 2-pin, 3-pin, 4-pin, and DC5521-connected 12V fans, pumps, and other small electronics. Works seamlessly with PC case fans, water pumps, routers, cabinets, and DIY cooling projects.
- Reliable & Safe Power Adapter AC 100-240V 50/60Hz input with 2A max output (24W total power). Built-in multi-layer protection including overcharge, overcurrent, overvoltage, short-circuit, and temperature safeguards. Fireproof housing and thick copper wires ensure long-term durability and safety.
- Reliable & Safe Power Adapter AC 100-240V 50/60Hz input with 2A max output (24W total power). Built-in multi-layer protection including overcharge, overcurrent, overvoltage, short-circuit, and temperature safeguards. Fireproof housing and thick copper wires ensure long-term durability and safety.
- Versatile Cooling & DIY Applications Perfect for reducing fan noise in home electronics, optimizing airflow in water cooling systems, adjusting pump flow rates, or powering low-voltage DIY projects. Suitable for PC cases, gaming consoles, network cabinets, aquariums, and more.
Brand: Delinx
Color: Black
Material: Metal, Plastic
Item Weight: 0.16 Kilograms
Connector Type: Barrel Connector
Connector Type Used on Cable: Barrel Connector
Input Voltage: 240 Volts
Amperage: 2 Amps
Form Factor: Rectangular
Maximum Power: 24 Watts
Output Current: 2 Amps
Output Voltage: 12 Volts
Output Wattage: 24 Watts
Item Weight: 0.16 Kilograms
Item Dimensions: 3.35 x 1.77 x 1.18 inches
Color: Black
Enclosure Material: Metal, Plastic
Brand: Delinx
Model Number: 3
UPC: 613966166323
Mfr Part Number: Fan312DX
Manufacturer: Delinx
Unit Count: 1.0 Count
Warranty Description: 1 year
Built-In Media: 1x 12v adjustable power supply, 1x Fan Splitter Cable
Specification Met: UL, FCC, RoHS, CE
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, Jul 24
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Perfect little plug-and-use gadget! Nice size, Alright durability, Great compatibility, Smooth voltage adjustment.
Reviewed in the United States on October 16, 2025 by Tristan Stanley
This one device makes it so easy to use 2 blocks of triple computer fans to build a DIY air purifier with 2 Filtrete MERV 13 air filters (12" x 24"). Just tape the fans between the filters with cardboard to block off the top and bottom, plug this fan speed controller into the fans and a 120 volt outlet and voila! instant very quiet air filter. Works really well.
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Reviewed in the United States on October 23, 2025 by Warren Hartz
Bought this because I have more PC fans than I know what to do with, and I do not regret it at all. I have an office/gaming room that has 6 monitors, a gaming PC, a server, and 2 3D printers in it. The room gets HOT! I use this to power 2 200mm PC fans that sit in the window, pulling in cool air (or pushing out fumes from the printers, as necessary). It works perfectly. Twist the knob right and the fans go faster. Twist it left and they go slower. All the way left turns them off. This thing is not "smart" at all, but it gives you complete manual control over 2 fans, which is exactly what they advertised. I love it, my cat loves it, my wife loves it. If you have a use for a wall outlet 3/4-pin PC fan controller, this is a good one.
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Reviewed in the United States on January 14, 2024 by Amazon Customer
Seems to work well, plenty of cable tenth. Took off one start as the main power connector is easy to disengage, loose.
Reviewed in the United States on February 19, 2024 by Yositimy
This is powering 2x server cooling fans on 2x mini gaming PCs sitting next to each other. In my tests, it outputs a little more than the advertised 24w. If you're looking at this, you know what you're doing. This works perfectly.
Reviewed in the United States on September 29, 2025 by Amazon Customer
We have two 12DC computer fans which I custom mounted to the rear of our in-home bug zapper, as my wife's guinea pigs eat so many vegetables and fresh fruit, well, it's just inevitable that fruit flies will find their way into your home. Doesn't seem to be any way of avoiding this, especially when you walk into Trader Joes and see those little buggers buzzing all around the veggies. The computer were a bit too loud so we had to tune them down to about 1/2 speed and this 12 volt DC controller really did the trick. The dial is easy to read, fully adjustable, no issues with current distribution or lack of power, it simply works and works well. The guinea pig cages are now much quieter and the bug zapper is working much better than before this custom addition. I would absolutely recommend this controller.
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Reviewed in the United States on September 16, 2024 by Wookieecantina
Here's all one needs to know: this unit varies the DC voltage to 12 VDC fans (3-12 VDC) for "speed control" and DOES IT QUITE WELL! It's main use is to make "loud" PC fans "quiet" by slowing the blade rotation. The "Y" connector is quite handy for controlling TWO FANS AT ONCE. Operation: 1) connect the device to the fan's power connector 2) plug the unit to a wall outlet 3) rotate the knob to turn it on ("CLICK!"). A GREEN LED indicates it's powered up. 4) rotate the knob enough to get the fan blades spinning 5) back-off the knob to get the required "quietness" from the fan (you'll find the fan is still moving "quite a bit" of air!) 6) if desired, "tape down" the knob to keep it's setting from being changed 7) Walk Away, leave the fan alone, and let it "do its' thing" If you need to change the fan speed later: undo the "tape down", re-adjust the knob "to taste", then tape down the knob again. I ** DO INDEED ** recommend this unit!
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Reviewed in the United States on July 5, 2024 by Ken Simmons
While it seems to work sorta, the wires on the 120v end are super cheap/thin 500gauge Ima Afraid to leave plugged in. I didn't bother connecting a meter to it & I plugged a small 40mm 12v fan to this and you could hear it speed up & down without moving the variable resistor. though the fluctuations were small it is clear that these cannot hold a steady output voltage. I surly wouldn't use these with anything expensive connected to it ! lol Though it works, I see smoke and/or flames in the future ! Thanks china
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Reviewed in the United States on September 3, 2024 by K. Smith