Before revision: As the keying is consistent across all connectors, it does not completely prevent incompatible connectors from mating, which can lead to damage; this is changed in Hosiden type, wrongly called Mini-DIN, which keys different connectors.
After revision: As the keying is consistent across all connectors, it does not completely prevent incompatible connectors from mating, which can lead to damage; this is changed in Mini-DIN, which keys different connectors.