Audio Expansion Board (AEB) (700-11-01) 9/26/2019 Category: Products, Trilogy Mercury System, Interface Boards Provides standard interface for analog inputs and outputs Enables connection of up to 8 user panels per interface Up to 4 Audio Expansion Boards per MIU Each card has an 8-port capacity Balanced and unbalanced audio input and output Software-programmable I/O level adjustments for each port RJ45 connectors for simple cable construction Ideal for extending audio communications over IP