![What were these memory slots used for? Obviously memory stick duo was for psp, but what about the SD and CF ones? I didn't even know what CF was until now : What were these memory slots used for? Obviously memory stick duo was for psp, but what about the SD and CF ones? I didn't even know what CF was until now :](https://preview.redd.it/what-were-these-memory-slots-used-for-obviously-memory-v0-davm81rvadva1.jpg?width=640&crop=smart&auto=webp&s=590f2e7461b653e3c6597f4fe2639a064155cd26)
What were these memory slots used for? Obviously memory stick duo was for psp, but what about the SD and CF ones? I didn't even know what CF was until now :
![Miguel Lozada on X: "Who remembers the SD slot in PS3?! Anyone actually use it? https://t.co/9dCkDVfCEj" / X Miguel Lozada on X: "Who remembers the SD slot in PS3?! Anyone actually use it? https://t.co/9dCkDVfCEj" / X](https://pbs.twimg.com/media/Em5N9MnVQAAR-py.jpg)
Miguel Lozada on X: "Who remembers the SD slot in PS3?! Anyone actually use it? https://t.co/9dCkDVfCEj" / X
![Miguel Lozada on X: "Who remembers the SD slot in PS3?! Anyone actually use it? https://t.co/9dCkDVfCEj" / X Miguel Lozada on X: "Who remembers the SD slot in PS3?! Anyone actually use it? https://t.co/9dCkDVfCEj" / X](https://pbs.twimg.com/media/Em5N9MpVkAAn2YJ.jpg)