What are the Hydra In+ Hydra Out+ TekLink and Ethernet connectors on the PG3ACAB and PG3AMOD used for?

What are the Hydra In+ Hydra Out+ TekLink and Ethernet connectors on the PG3ACAB and PG3AMOD used for?

Currently these connectors are non-functional.  Teklink and Ethernet may be added in the future. The Hydra connectors are for linking multiple modules in parallel to function like one very-wide pattern generator. Again, this capability is not available today but may be added in the future.