ISIS user manual
Issue G
132
Mounting recommendations
It is strongly recommended that users provide additional support to the APOLLO board
using the CPU heatsink mounting holes. This limits flexing of the APOLLO board when
DRAM DIMM modules and IDE cables are inserted and removed from the board. All M3
standoffs used in this configuration need to have an outside diameter of at least 5.4mm to
prevent the standoff from being drawn into the mounting hole.
If this configuration is used and a large CPU heatsink is used with the APOLLO board
then the standard heatsink backing plate is not required and the following configuration
should used. The brass spacer has the following dimensions 3.8mm O.D. x 3.0mm.I.D. x
1.7mm long.
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