Round the back...
Round the back of the Armor LCS is the vertically-mounted PSU placement, such that a PSU slides into the chassis from the inside. It's easy to do but it would have been nice to see a removable PSU plate on the back, really.
Alongside this is a 90mm Thermaltake fan, mounted into a plastic caddy. The fan comes pre-fitted, but the one in the above picture is for the top panel of the Armour LCS, yet another 90mm model.
The bent portion of metal is a brace that’s slid into place once the PSU is fitted. This brace ensures that vibrations are kept to a minimum, with a thick foam pad ensuring good contact between brace and PSU.
Underneath the 90mm fan are 4 round plates covering pre-punctured holes, ready for an external water-cooling solution. The good news here is Thermaltake has provided the appropriate rubber protectors for these holes should you need them.
Now that the outside is covered, let's take a look inside in the Armor LCS.