HP J2603-69011 - AdvanceStack EtherTwist (10Base-T) SNMP module - Provides `In-band` network management for up to 16 hubs - (J2603B) Retail
HP J2623-69001 - AdvanceStack Dial-a-LAN module - Provides dial-in/dial-out access when inserted in AdvanceStack hub expansion slot - Has two RJ-11 connectors for internal 28.8Kbps modems - (J2623A) Retail
