Later BBC Master
Econet Interface
Issue 2
On the underside of the Master Econet Module, we can see the two rows of the connectors. The first, five-pin connector provides pin-for-pin connection to the DIN socket and the 17-way connector provides all the other links the Module needs with the Master.
We can also clearly see the serial number ticket, a vital part of all Acorn hardware since time immemorial.