The external housing of the NMediaPC HTPC 180BA is very easy to work with and in order to gain entry into the case requires the removal of two thumbscrews located on the rear. Once the thumbscrews have been removed, the top panel slides backwards and can be lifted off the chassis. The material that comprises the top panel is very thin and felt easily bendable in my hands. A view of the interior reveals a large assortment of cabling and a small amount of space to work when installing components. Towards the front of the case is the location of the single external 5.25" drive bay which is completely removable. Consumers can easily install the optical drive of their choice and slip the unit back into place.