Description The HubSTACK STHI series of Intelligent Stackable Token Ring Hubs provides a cost-effective connectivity solution for workgroups. The STHI hubs are fully SNMP-compliant and provide basic management functionality for the stack, including error breakdowns, alarm thresholds, Automated Beacon Recovery and much more. The HubSTACK STHI stackable hubs offer support for the industry-standard MIB II as well as a full complement of Cabletron enterprise MIBs.