I am upgrading the hardware in an old Dell XPS 630i desktop. The case is exceptionally good but the components were just not sufficient for my purpose any more, they are at least 8 years old.
I have removed the motherboard and PSU and upgraded as follows:
Motherboard: GIGABYTE|GA-Z97X-UD5H Z97
PSU: LEPA| B1000
CPU: INTEL|CORE I5 4690K
RAM: MEM 8Gx4|GSKILL F3-1866C10Q-32GAB
Fan: CASE FAN FRACTAL | FD-FAN-SSR2-92
My questions are related to the fans in the system. I left the two original fans in the front of the Dell case that came from the factory. I may have to change them out at some point but they were working just fine before I upgraded the machine. However now that I have installed all of the new hardware, none of the case fans are running. I connected the two original front fans to the fan connectors on the small circuit board that Dell installs on the XPS machines to run the front panel. The new case fan that I added to the rear of the case is connected to the fan connector on the small circuit board that Dell installed in the PC at the factory. It is connected to the front panel circuit board via a wire connector. Here are my questions:
1. Should the three case fans be running all the time or just when temperature elevations dictate the need for additional airflow? I have had the machine up and running now for about 3 hours installing windows, reformatting HDDs, etc. and none of the three fans have kicked on one time.
2. Is the small circuit board on the back of the Dell case meant to run a case fan? I can't imagine what else the four pin connector would be used for.
3. Was there some proprietary software in place when Dell built the XPS that controlled the fans through the front circuit board that has now been lost because of my rebuild?
I realize there may be a very simple answer to this question but I have tried everything I can think of, short of plugging the fans directly into the new MB, and nothing works. I have searched several Dell forums, including the 630i forum, and cannot find anything that speaks to this specific problem.