5.6.1
AIO Specific System Mechanicals
If cables are part of a flat panel display or other part that must be removed to gain
access to components in the system, ensure the cables are long enough so that it is
not difficult to connect them before reinstalling the flat panel or part.
Hiding the motherboard I/O connectors and cables behind the flat panel display can
result in a cleaner looking AIO system. A combination of cable management and
placing the motherboard so that the motherboard I/O ports are recessed from the
side of the chassis, can allow the cables to be hidden from view. Most LAN, USB,
Audio, and power cables can be hidden if the I/O shield is offset 60mm from the
side of the chassis. DVI and HDMI cables may need 80mm. Cable management
can be done in different ways, such as a shroud along the side of the chassis which
hides the ports, or plastic clips that hold the cables behind the chassis.
Chassis cables should be identifiable through labeling and proper connector keying
for easy match up with the motherboard (color coded where possible)
Chassis cables should be long enough to reach all of the headers on the
motherboard, until motherboard ODM's bring their boards into compliance to the
placement zone recommendations.
Chassis cables should be long enough to reach headers on any specific intended
board(s) that do not comply with the recommended zones shown in Figure 5-2.
Cable bunch-up areas should be defined with cable guides. Provide zip ties in the
box for cable management.
Minimize the number of screws to open the back panel of the chassis. A maximum
of 8 screws is suggested. However, fewer is better.
An instruction manual should be included in the box which describes steps to open
the chassis and install the motherboard and thermal solution
The same type of screws should be used for back panel/motherboard and thermal
solution retention. If not the instruction manual should clearly differentiate the
screws and their purpose
A data sheet of the flat panel display or a single page insert with the flat panel display
settings should be included in the box so integrators can easily configure motherboard
jumpers and BIOS settings.
52
Thin Mini-ITX Based PC System Design Guide
Mechanical
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