Abstract: A chassis for encapsulating a standard desk-top mounted electronic computer for juxtaposed mating with computer accessories in a EIA-configured rack including a base plate defined by spaced-apart side walls and spaced-apart front and rear walls, the walls extending upward therefrom to a common contiguous upper edge enclosed by a top plate to create of EIA-sized enclosure, a support plate bounded by the walls and located intermediate between the base plate and the top plate to divide the enclosure into a lower bay and a separate upper bay, the upper bay of a size and shape to encapsulate the computer therein and the lower bay of a size to receive a power supply for the computer and other accessories for interfacing with the computer, a ram air cooling device in the air thereinto for cooling the accessories and power supply and for providing a separate stream of cooling air from the lower bay to the upper bay to cool the computer encapsulated therein and provide additional air for use by the computer's internal