Abstract: A reconfigurable modular computer assembly. The computer assembly comprises a housing having parallel longitudinal guide walls and a main chassis for carrying electronic components. The main chassis is slidably mounted to the housing using bayonet sliders. The main chassis includes a control panel and a cable opening for allowing cables from a transom to pass through to components located in the main chassis. A computer power supply is removably attached to the main chassis. In a preferred embodiment, a 3.5" drive cage sub-chassis and a 5.25" drive cage sub-chassis are removably attached to the main chassis. Alternatively, two 3.5" drive cage sub-chassis can be removably attached to the main chassis. When the main chassis is in a deployed position, the drive cage sub-chassis and power supply can be easily disconnected and removed from the computer assembly for cleaning, replacement or repair without powering down the computer assembly. A face plate is removably attached to the main chassis.