This shows the inside behind the 5.25" area, the center mounted internal intake fan and HDD cages.
You can see 3 of my SATA drives mounted in the i-Cage. I did this because I would need longer SATA cables [36" to 42"] to route and hide the cable if the drives were in the HDD cooling area. As i did not want to buy new cables yet, the drives go in the i-Cage. The temps are LOW, I mean low. The highest HDD temp is the WD SATAII 250gb @ 22C. My OS drive sits @ 19C and my ISO storage HDD sits @ 20C. The 4th drive[below the i-Cage] sits @ 21 and the IDE drive sits @ 24C with almost no airflow.
As you can see the shroud for that fan is rather impressive and quite difficult to get off. Mainly because you have to find the 4 tiny screws holding it to the case, remove it, then take the shroud apart[another 4 screws] to replace/clean the fan. This is VERY difficult if not IMPOSSIBLE to do with the motherboard tray in the case.