On the side of the front panel, you will find the front panel IO, two USB 3.0 ports, a reset button and your usual headphone and microphone jacks. At the rear, there are some vented PCIe card blanks, which are held in place with a master brace which slides back allowing removal of the blanks.
There is an empty 120mm fan mount and drilled mesh and a removable PSU shroud mount. The PSU mount used four captive standard thumbnails, which work just fine, no real alignment or sticking issues.
On the underside, there are some rubber feet, a long dust filter, and access to the HDD cage mounting screws, more on that later. The height of the feet will allow a good amount of clearance for airflow, even on a thick pile carpet, though it probably wouldn’t tolerate a shag pile rug!