Are you talking about cameras and/or printers? Any digital camera "SHOULD" have a usb plug with the camera and the majority of photo printers are camera/usb ready. I personally prefer Canon printers because of reliability and quality of prints. I have a film Minolta Maxxum 7000 camera, Fujifilm and Olympus point and shoot. My next D-SLR will be a Sony 850 that way I can still use my same lenses from my Minolta.
Hope this helps.