Delinx 8W DC 12V PC Cooling Fan Speed Control,USB to Dual 3-Pin 4-Pin Fan Power Adapter Cable,DC 5V Step up 5-12V Adjustable,with 2-Way Splitter Cable

Works great. Note that the speed control seems to work on FLX fans as well.

It works and functions as it should. Just what I needed to power a couple of extra fans I had lying around for my cabinet that my PS5 is in.

Works just as intended and you can control the fan speed.

Been working on a project for a new homemade office desk. Using this to control two 120mm fans for the PC enclosure cooling. Really like that this uses a USB port to drive PC fans "EXTERNALLY" from the case. Helps to evacuate any residual heat, so I can keep the PC below the desk in a small enclosure but not worry about overheating. I like the speed adjust feature, but honestly, I run my fans on 100% using two 'whisper quiet' ~20dB and can barely hear them. Good product, and good price for what it does.

Does what it says it will do

This allows for running up to 2 fans off of usb power. It also has an on/off switch and dial to control voltage(fan speed). It works just as intended.

I tried multiple different fans (3-pin and 2-pin) but none turned on when connected to this device. The lights power on on this adapter when you power it on but it doesn't power the fans. It seems easy to use if it would work and maybe it's just the quality of the one I had.

I am using this fan controller for my arcade cabinet so that after the pc shuts off the fans still run to cool off the internals and it works great. I had 2 pc fans that I used and the plugged in and worked with no issues. I did not need to use the full length of the cord but it has plenty.Over all it is a great little adapter to get fans working where they otherwise might not be able to work.I fully recommend this item@