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Motherboard Dimensions

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Bob Yellin

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Aug 12, 1996, 3:00:00 AM8/12/96
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Can anyone tell me where to get exact dimensions on the standard AT, Baby
AT and ATX boards? Actually there are some web sights with ATX dimensions
but I can't find the others.

Thanks in advance.

Bob Yellin bye...@together.net

Ben Myers

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Aug 14, 1996, 3:00:00 AM8/14/96
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Bob,

This will get you close enough. According to documents from Micronics
about their motherboards:

Baby-sized AT is 13.8" x 8.5"
Full-sized AT is 13.8" x 12.025"

In practice, manufacturers make boards smaller than these sizes and
still call them baby- or full-AT, because they will fit inside cases
made to fit the baby- or full-AT dimensions.

Full-sized were obviously the dimensions of the original IBM AT
motherboards. Baby-AT boards had the dimensions of IBM's second
revision to the AT with a cost and size reduced board... Ben Myers

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