![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 :
![Memory Card Reader for PS3 Console (PS3-68) - China PS2 Memory Card Reader and PS2 price | Made-in-China.com Memory Card Reader for PS3 Console (PS3-68) - China PS2 Memory Card Reader and PS2 price | Made-in-China.com](https://image.made-in-china.com/202f0j00gMSQtohmgRkH/Memory-Card-Reader-for-PS3-Console-PS3-68-.jpg)
Memory Card Reader for PS3 Console (PS3-68) - China PS2 Memory Card Reader and PS2 price | Made-in-China.com
![Sony PlayStation 3 Ps3 Memory Card Reader Ribbon Cable & Screws for 60gb CECHC for sale online | eBay Sony PlayStation 3 Ps3 Memory Card Reader Ribbon Cable & Screws for 60gb CECHC for sale online | eBay](https://i.ebayimg.com/images/g/3isAAOSwfNVkQDFw/s-l1600.jpg)
Sony PlayStation 3 Ps3 Memory Card Reader Ribbon Cable & Screws for 60gb CECHC for sale online | eBay
![Big Shout out to u/Waughy for sending the Card Reader Cover for my Phat PS3, by mail even though ive never met the man. thanks mate . Before and After Photos. : Big Shout out to u/Waughy for sending the Card Reader Cover for my Phat PS3, by mail even though ive never met the man. thanks mate . Before and After Photos. :](https://i.redd.it/zblpo3hfj5x51.jpg)