What's the difference between ATX and micro ATX?

Related questions

1. Is mini or micro ATX smaller?
2. Can micro ATX fit graphics card?
3. What SFX means?
4. Can a micro ATX fit on a ATX?
5. What is the difference between ATX and EATX motherboards?
6. Can Matx fit in ATX case?
7. Will Micro ATX fit in full tower?
8. What does SFX PSU mean?
9. What does SFX makeup mean?
10. What is the difference between ATX and Extended ATX?

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