
2 Form Factors
2-6
The backplane is normally manufactured using thicker PCI boards than found
in desktop PCs. These thicker boards result in better mechanical
characteristics. This allows for frequent plugging and unplugging of the CPU
or I/O cards.
Rack-Mount or Industrial PC Motherboard
Additionally, maintainability is improved over desktop PCs because all I/O
boards, including the CPU board, are easily accessible from the top of the
chassis.
We do not recommend equipping a rack-mount chassis with a standard
mainboard found in desktop PCs because you can lose mechanical ruggedness
and good maintainability.
The rack-mount PC has the following special capabilities:
• It can be mounted in a rack that contains other units such as special signal
conditioning, remote I/O, and redundant power supplies.
• It is more powerful for hardware-in-the-loop or other applications that
consist of hundreds of I/O channels or use many I/O boards.
• It can be placed in a harsher environment.
• It is more easily maintained.
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