I think I've seen both eg the more typical 5 pin on most Cameras MP3 players etc and then the 4 pin that comes on the Pentax Optio S4 for example.

My friend has a 7D, and the SD card reader on her computer has crapped out (we think). She doesn't have the official IFC-200U/IFC-500U interface cable that came with the camera, but for purposes of ...