Why is my USB port not working Mac?

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Tags

1. #hitting
2. #blinks
3. #option
4. #power
5. #reset
6. #complete
7. #typical
8. #shift
9. #light
10. #concurrently
11. #button
12. #changes
13. #release
14. #control
15. #connect
16. #macbook
17. #adapter
18. #cable
19. #seconds
20. #colors