Never be AOG for an ELT with spares available within your fleet.
The Programming dongle is a smart connector identical to the DIN12 that is used to store aircraft programming information. Once attached to the ELT wire harness it allows fleet operators to move any ELT to any other aircraft. The stored aircraft data will be automatically downloaded into the ELT.
This connector is used in place of the DIN12 connector. Required for Navigation Interface connection.