How can I tell the difference between USB 2 and 3 ports?

Related questions

1. What is the difference between a 2.0 and 3.0 USB cable?
2. Can a USB 3.0 be used in a 2.0 port?
3. What is usb3 driver?
4. Does Windows 8 support usb3?
5. How can I tell the difference between USB 1.0 and 2.0 ports?
6. Can you use a 2.0 USB in a 3.0 port?
7. How do I know if my USB drivers are up to date?
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10. How do I know if my USB 3.0 port is working?

Tags

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2. #difference
3. #different
4. #color
5. #ports
6. #between
7. #colored
8. #differences
9. #visually
10. #center
11. #physical
12. #black
13. #visual