This is the Original Equipment Programming Card that came with the Version 1 Scorpion Speed Controllers. If you lose your original Programming Card, purchase an second-hand ESC that is missing the Programming Card, or just want to have an extra in the shop, then this is the part that you need.
To see if this is the correct programmer for your ESC, look at the serial number that is laser engraved on the gold heatsink plate on the ESC. If the serial number has "VV2" in the middle of it, then it is a Version 2 ESC, and needs to use the new Wireless IR Programming Card and IR Receiver Module. If it does not have "VV2" in the middle of the serial number, or if it has no serial number at all, this is the correct programmer for you.