![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 :
![PS3 CFW 4.89 4.90 Installation guide for OFW 4.89 bgtoolset UPDATE 2023!! CFW 4.89.3 Evilnat - YouTube PS3 CFW 4.89 4.90 Installation guide for OFW 4.89 bgtoolset UPDATE 2023!! CFW 4.89.3 Evilnat - YouTube](https://i.ytimg.com/vi/UZeBv7Gk2f0/maxresdefault.jpg)
PS3 CFW 4.89 4.90 Installation guide for OFW 4.89 bgtoolset UPDATE 2023!! CFW 4.89.3 Evilnat - YouTube
Infamous - [PS3 Game] [ENGLISH Language] [CIB / Complete in Box], Video Gaming, Video Games, PlayStation on Carousell
![Install PS3 CFW On PS3 Including Firmware 4.88 - PS3 Hacking & Guides - Cobra, Ferrox, Evilnat - YouTube Install PS3 CFW On PS3 Including Firmware 4.88 - PS3 Hacking & Guides - Cobra, Ferrox, Evilnat - YouTube](https://i.ytimg.com/vi/8hJctgrV9f4/sddefault.jpg)