Anyways, I have 2 of these controlling all of my fans now and besides a little sporadic error, it all works OK

Sometimes I get a weird USB error and I wonder if it's this or the header attached to this (controller that comes with the HD120's), but it isn't anything that bothers me enough to check

AND if your computers starts to crash with lots of BSODs and crazy errors like IRQ errors, page file, kernal this and that, cant write to memory

IF memtest is good and you can benchmark and stress test GPU and CPU then check for that weird error in device manager and start removing stuff

Ok the problem was with this weird error in the USB devices in device manager - Link State Not Compatiable - and Windows would disable this device