![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 :
![Has anybody ever actually used the card readers on the PS3? I've owned this thing since 2008 and never once have I ever used them. : r/PS3 Has anybody ever actually used the card readers on the PS3? I've owned this thing since 2008 and never once have I ever used them. : r/PS3](https://i.redd.it/0l8hjzprbo691.jpg)
Has anybody ever actually used the card readers on the PS3? I've owned this thing since 2008 and never once have I ever used them. : r/PS3
![Playstation 3 Memory Card Adapter - Use PS2 Memory Cards on Sony PS3 | Amazon price tracker / tracking, Amazon price history charts, Amazon price watches, Amazon price drop alerts | camelcamelcamel.com Playstation 3 Memory Card Adapter - Use PS2 Memory Cards on Sony PS3 | Amazon price tracker / tracking, Amazon price history charts, Amazon price watches, Amazon price drop alerts | camelcamelcamel.com](https://m.media-amazon.com/images/I/31m3nVhPatL.jpg)