June 2002
Beginner to intermediate
816 pages
32h 59m
English
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Step 8: Install the Motherboard
Slide the motherboard into position, verifying that each motherboard mounting hole aligns with its brass standoff, that each nylon standoff slides properly into the corresponding slot on the motherboard tray, and that the I/O connectors on the rear of the motherboard align properly with the I/O template (or the access holes in the chassis).
While maintaining continuous gentle pressure toward the rear of the chassis to keep the motherboard aligned with the mounting holes, insert one of the mounting screws, but don’t tighten it fully. Continue inserting mounting screws loosely until all mounting holes are occupied. Finally, tighten each mounting screw gently, as shown in Figure 28-30. Finger-tight is adequate. We’ve seen people crack motherboards by applying too much torque to the mounting screws.
Figure 28-30. Tighten the motherboard mounting screws sufficiently to ensure good contact
Make sure to install a motherboard mounting screw at every position. In addition to securing the motherboard physically, these screws also ground the motherboard to the chassis. Their positions are carefully calculated by motherboard designers with grounding in mind. Leaving one or more screw positions vacant can cause improper grounding, which may cause instability or high RFI emissions.
If you have not already done so, connect the CPU fan to the appropriate motherboard ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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