OutBack HUB-4 System Communication Manager The OutBack HUB-4 system communications manager allows the interconnection of up to four power conversion devices with the MATE. The interconnection creates a completely integrated Power System that is coordinated and managed by the MATE.The OutBack HUB-4 communicates stacking phase, load share, incremental start-up and shut-down information directly between the inverters. Interconnection cabling is standard ethernet CAT5 eight wire with RJ45 modular jacks. The HUB is powered via any inverter or MX60 charger controller.The Outback HUB-4 communication manager allows the MATE to control any combination of four FX series inverters/chargers and MX60 MPPT charger controllers.