Thanks for the help all, things are running fine now. However, the BIOS is detecting the slower speed of the 200mm fan (when compared to the other fans, due to its size), and it's under the designated chassis fan minimum RPM as set in the BIOS (or rather, it was). This causes the computer to hitch a few times at start up; it will whirr up to speed, stop and go dark, then repeat one or two times before the computer actually starts. It didn't do this at all before I plugged the fan into the motherboard, and stops doing it again if I unplug it. If I go into the BIOS, I can see that it recognizes the fan as spinning under the max RPM setting, and despite lowering this setting and telling the BIOS monitor to ignore the top fan's RPM, it still occurs.