What is the expansion bay on a ps2 used for?

Related questions

1. Are NES ROMs illegal?
2. Is there a ps4 emulator?
3. What is free Mcboot ps2?
4. What are ROM sets?
5. Can n64 play NES games?
6. Is it illegal to use ROMs?
7. Is it illegal to download ROMs in Canada?
8. What is a BIOS ROM pcsx2?
9. What are the USB ports on a ps2 for?
10. Can ps2 play burned games?

Tags

1. #50000
2. #internal
3. #longer
4. #10000
5. #expansion
6. #18000
7. #30000
8. #models
9. #designed
10. #adaptor
11. #15000
12. #model
13. #playstation
14. #pcmcia
15. #drive
16. #replacing
17. #70000
18. #introduced
19. #present
20. #network