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is this AT or ATX?

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Sep 13, 2002
Williamsport, PA
it's mom's compaq. it's a micro version of one of these. i can't tell on the PSU if it's one or the other. it's a 1Ghz P3. came with a 700 P3. i want to know if it's ATX to see if i can just buy a motherboard CPU and ram to upgrade this peice of crap to something a little stronger.
What do the connectors look like to plug it into the board? That will help determine the answer :p
2 connector =at

1 big one =atx

1 big one and one 4pin small one = p4 atx