What is the difference between ATX and micro ATX?

Related questions

1. What is the difference between an AT and ATX power supply?
2. What does ATX and ITX mean?
3. What does SFX PSU mean?
4. What's the difference between ATX and micro ATX?
5. Are all PSU the same size?
6. What does a PSU do?
7. What is the difference between ATX and Extended ATX?
8. What does ATX mean on Snapchat?
9. What is a SFX power supply?
10. Can ATX fit in Mid Tower?

Tags

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2. #typically
3. #measuring
4. #expansion
5. #rectangular
6. #factor
7. #board
8. #offshoots
9. #boards
10. #generally
11. #244mm
12. #three
13. #retains
14. #305mm
15. #while
16. #being
17. #difference
18. #maximum
19. #micro
20. #slots