The unit includes two 80mm exhausts mounted over the I/O shield. While the pre-stamped grills are very good overall for airflow, purists will choose to cut away the grills completely and replace them with less restrictive fan guards. One interesting thing I noticed was that the fans were only mounted with two screws, one at opposite corners, as opposed to the standard four. Additionally, the chassis only had screw holes for two screws, the other two positions having a small dimple. I’m not sure if this is to further decrease noise by vibration by cutting the number of contact points in half, but users looking for all four fan mountings (for radiator mountings for example) will need to drill out the extra holes. Rounding out the rear panel are the 7 expansion slots, as well as four pre-punched cut outs for additional COM or SCSI ports.