This is a plug-in module for FileStore, Master, Master Computer, RISCiX and RiscOS machines.
This interface, ADF10, contains collision detection circuitry to help make the network more reliable and faster to use.
The interface consists of a small PCB upon which is mounted a 68B54 ADLC and it's support circuitry. The long row of pins is an 8-bit data bus to the host computer, along with various control signals and power. The second row of five pins connects to the Econet socket in the back of the computer.