By default, the Masterone module is supplied with a Master-to-Group cable, which can be used to connect a group to the Masterone . The master-to-group cable has three IDC connectors: one for the master, one for the group and one for the extension of the connection to other groups. This cable has two IDC jacks and one IDC plug.

Just connect the plug to the third MG socket and you can connect two more groups with one Master . The group-to-group jacks are arranged to allow a group configuration of about 72 PD, which allows up to 4 QSCs. It is possible to chain more G-G expansions together, for example to add a fourth group or to connect groups with larger channel configurations (up to eight QSCs).