The HUB system communications manager is the backbone of your networked OutBack power conversion system. The OutBack HUB communicates stacking, load share and power save on/off signals. Interconnection cabling is standard Ethernet CAT5 with RJ45 modular jacks. Through the use of a HUB, your system is completely coordinated and managed by the MATE.
Do you need a HUB?
If your system includes more than one Outack device (inverter, charge controller, etc...) then the HUB is a must to allow the MATE to communicate with all of the devices in the system.