Minolta 5000i 35m
The i-series Maxxums were the 2nd generation of Minolta auto focus SLRs. They had cards for various shooting modes beyond what you could set on the camera. It is not a slot for memory cards like the newer digital cameras. The slot was also the access point for a repair tool to adjust the cameras internal settings of speed and exposure,
The repair tool used to do this was: An original GameBoy...
You can use any lens made for Minolta AF. Latest models of the lenses will not work properly since they have more features than your 5000i is capable of, i.e. power assisted zoom..