There is an oversize hole cut in the motherboard tray to permit access to the CPU socket backing plate. This is commonly needed when installing different aftermarket coolers, but there are not many cases it seems that take into account different socket orientations for AMD motherboards. Invariably one or two of the attachment points are still blocked, which is not a problem with the EVO. The original Tempest did not offer an access hole at all, so this is a welcome addition.
Although I've used a micro-ATX motherboard in this install, as you can see from the standoff holes there is still plenty of room surrounding the board for easy access and cable routing. Even full length video cards positioned in one of the very bottom slots should not pose any interference issues with hard drives mounted in either cage. I did encounter one negative thing during installation and that is the rubber grommet inserts pop out of the motherboard tray quite easily. This can happen when pulling cables through, which leaves a sharp edge exposed to the wires. The original Tempest did not use the rubber inserts, it only had rolled edges around these openings, which may actually be preferable to the grommets given their tendency to pop out of place.
A 3½" to 5¼" external drive adapter is included for those who refuse to give up their floppy drives, although I found that the mounting holes for it do not quite match up exactly with those for the optical drives, and you're left with an uneven flush fit. It's not very noticeable, particularly in black-on-black, however drives with a lighter color may be more obvious. The front and side 120mm intake fans use blue LEDs and there are also strips of blue lights along both sides in the front. Additionally, a green hard drive activity LED (not pictured lit) is present on the left side of the bezel towards the bottom, where the angled slashes are. Other than the color, I believe this is all a carry-over from the original Tempest.