Yetti

Zotty thx for the link and all yr tutorials... Still 18th in FAQs..pretty popular question then. DevB thx for the reminder about the 1amp limit. My aim in adding information to this old thread is if anyone read it to get the information they need I was just trying to point out it's a pretty good idea to use splitters.. obviously to the rules that we've laid out with 4.5 and 1 amp imits.. as it releases fan control outlet headers on the commander pro which can be very useful if you have a lot of fans.... cheers all

Just a little tip..when you are connecting fans via a splitter cable to the commander Pro always use identical fans in that splitter otherwise the commander pro may get confused and report and not control fan speed correctly oh and also don't exceed more than 4.5 amps in total for all the fans connected to the commander Pro

Hi. I notice in yr diagram for fan speed control you are connecting some of your fans to motherboard fan headers...may I suggest a modification to your setup. You can use 2/3/or 4 way splitter cables in the Commander Pro as long as all the fans don't draw more than 4.5 amps in total..see here for a 3 way. https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F132480710151 The advantage of doing it this way is that you get RPM read outs of all your fans.. or should I say groups of fans on each fan splitter.. via the Corsair Link software. This is far more convenient for seeing your fan speeds, as you see all your fan speeds in one place on one piece of software. To see the fan speed of the fans connected to the motherboard headers you would require another piece of software to be open on your desktop. Secondly, by using fan cable splitters you can set up fan curves for each group of fans based on CPU GPU or motherboard temperature sensors. When connecting fans to a splitter I suggest you only use identical fans in that group as otherwise the commander Pro will get confused about the fan speeds and will not report them correctly and will not control the fan speed correctly. I have 3 Corsair LL120s fans set up on one splitter and they work fine. I have three other fans non pwm so they are voltage controlled 3-pin connector type connected separately to individual channels on the commander Pro... and even though they're not pwm fans the commander Pro controls their speed perfectly. I also have a Corsair H45 cooler fan connected to the commander pro which means I can control the fan speed of that too. You can even connect the pump for the h45 into the commander Pro and it will control the speed of that... but this is not recommended by Corsair as they say it should always run at full speed which is about 4000 RPM... it's a lot quieter at 3000 or two and a half thousand RPM and actually doesn't produce any better cooling after I tested it... also the fan on the h45 doesn't need to go above 1000 RPM because again doesn't produce any more cooling... believe it or not in my pc system at least. After some fine tuning work with fan curves my case is super quiet yet my AMD FX 3850 CPU does not go above 35 degrees and my ASUS GTX 1060 does not go above 65 degrees even on the heaviest load... for instance running pass mark 3D graphics test and CPU test. Here is a setup using fan splitter cables. http://forum.corsair.com/v3/showthread.php?t=172785 I hope this helps