Perfect adaptor for my ventilation fan system. Have 8 fans mounted in 4 frames but needed these to attach all 8 fans to my thermostat control which has 4 connections. So 4 times 2 equals 8 and I am ready to keep my components cool.

I never got item .. So I can't give review

simple design does what it is suppose to.have been using clooer guys since 2002 not very exspensive yet dependable

Not much to say, they're three pin splitters, they're black, and they work. I appreciated that the College Guys website was the only one I found explaining the reason for only two pins in one of the plugs -- the third pin is for fan RPM feedback and motherboards can only take one signal. I would pair to identical fans so your feedback is accurate for both.

If your fan is pulse width modulation (PWM) controlled you need the four pin splitters.

I got help from one of the guys to make sure I had what I needed in my cart. He gave me great advice and I know that I have exactly what I need. Great product and great service!