![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?auto=webp&s=6ddfb176cf0c407c77d0c552516696eeb2742769)
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 :
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Sony Playstation 3 Memory Card Adapter - Use PS2 Memory Cards on PS3 (Japan Import) : Amazon.it: Videogiochi
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![Sony Playstation 3 Memory Card Adapter - Use PS2 Memory Cards on PS3 (Japan Import) : Amazon.it: Videogiochi Sony Playstation 3 Memory Card Adapter - Use PS2 Memory Cards on PS3 (Japan Import) : Amazon.it: Videogiochi](https://m.media-amazon.com/images/I/41C-S7hAfDL.jpg)
Sony Playstation 3 Memory Card Adapter - Use PS2 Memory Cards on PS3 (Japan Import) : Amazon.it: Videogiochi
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