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Aligning Case Standoff Locations to Mainboard Holes
The mainboard should fit with no
problem. We need to watch out for extra standoffs that dont
line up with screw holes in the mainboard. Remove those standoffs
or they will touch the bottom of the mainboard in undesirable locations.
A standoff below a screw hole is acceptable (Figure 65
and Figure 66).
Figure 65: Aligning case standoffs and mainboard holes
Every case standoff must line up with a hole in the mainboard. Remove any standoffs that dont line up. This is important, because improperly placed standoffs could inappropriately ground parts of the mainboard.
Figure 66: Removing an offending standoff
This standoff wouldnt sit below a hole in the mainboard. When placing the board, always look for standoffs that dont line up with holes.
We might also want to add
a few extra standoffs at other locations that match up with screw holes
in the mainboard. In particular, in this build, we needed to add standoffs
in the area around the sockets for the ATX power supply and the ribbon
cable sockets for the floppy and hard drives. These standoffs help reduce
stress to the mainboard when the ribbon and power cables are plugged
in. We dont want the board to bend under the force of plugging
in a ribbon cable. Figure 65
shows a standoff near a ribbon socket.
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How to Build Your Own PC (http://www.PCGuide.com/byop/) on PCGuide.com
Version 1.0 - Version Date: May 4, 2005
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