New
#11
Not a fail on your part, These type of "special" connectors are a serious problem in the industry, You take a standard connection system and fit a non standard plug and socket on your product, thus creating an exclusive after-market for spares.
A lot of the traditional camera manufacturers did it often, in the early days, with the excuse that they had to find a socket that fitted their product design, that is only acceptable as long as you do not advertise the connection as the standard