Summary: Speed controllers are for managing the tradeoff between a fan's cooling ability and its noise and longevity. I've used Zalman Fannmate-2s for many years, and they work perfectly and last forever.
Summary: I have been using this to dim LED strips in my computer case. Works great. Double sided taped it to case and have the lil knob poking out a grommet in case, so don't need to open it to adjust :) Doesn't cause any flicker and can dim very low/off or up to full bright.
... control my two exhaust fans and it is working great. I actually played around with the setting couple ...
11 December 2014
Summary: I just used this product to control my two exhaust fans and it is working great. I actually played around with the setting couple times then never used it afterwards... but it seems like its still working fine
... an enterprise-level Cisco appliance in my garage that works great but it creates enormous amount of noise
4 December 2014
Summary: I have an enterprise-level Cisco appliance in my garage that works great but it creates enormous amount of noise, as most of the cisco’s 1U devices have tendency to do. So, this is what I have done with my modification; I have dropped the fan speed to around 4600 RPM by using ZALMAN FAN MATE 2 Fan...
Summary: This is a pretty good product. My biggest complaint is that for the fan I was using it didn't really reduce the speed as much as I needed. I was using an 80mm vantec tornado fan. If you aren't familiar, these are very powerful fans that move a lot of air and make a lot of noise.
Summary: Does what it needs to do. Very long cable so can mount outside case to convenient screw. Will work on 3 or 4-pin motherboard headers. I mated to 4-pin fan but output connector was for 3-pin only so I easily cut plastic housing and it worked fine. Fan can be adjusted completely silent.