1-6 Product Description
1.3.2 Minitower Design Overview
The minitower models of the Compaq Deskpro EN Series of Personal Computers use a highly
serviceable chassis to house the slide-out system board, expansion board cage, power supply, and
mass storage devices. The expansion board cage houses the expansion boards.
All internal components are accessible when the access panel and the front bezel are removed.
The access panel is attached to the chassis with three easily removed thumb screws and the front
bezel is attached with tabs.
The system board is easily removed from the chassis after the access panel is removed and the
expansion board cage is raised by lifting a pair of top-mounted green levers. Once the access
panel has been removed and the expansion board cage raised, there is no need to remove any other
component to access the system board. Details of the disassembly procedure are found in
Chapter 6, “Removal and Replacement Procedures.”
The drive cage is located at the top of the chassis, accommodates one internal hard drive, and
provides four bays for external access drives.
The drive cage allows drive installation without the use of rails. Two screws on each side of the
drive are used as guides, and drive release latches are used to secure the drives into the bays. Extra
guide screws (standard and metric thread) are provided on the front of the chassis for use when
installing additional drives.
The expansion board cage with the riser board mounts at a right angle to the system board. The
riser board is secured to the expansion board cage with three screws. Expansion boards are
installed at a right angle into the riser board. A single screw secures each expansion board to the
expansion board cage.
The power supply is mounted in the top rear of the chassis. It is supported by built-in latches and
held in place by three screws that are installed through the rear panel of the chassis.
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