The Tesira EX-IO is a half-rack expander box for use with Tesira SERVER and SERVER-IO devices. The EX-IO is a 4-channel input and output expander. The expander features two channels of mic/line level input and 2 channels of mic level output. The expander communicates with the Tesira AVB network for audio networking, configuration and control and is powered by PoE+. The Tesira EX-IN is a half-rack expander box for use with Tesira SERVER and SERVER-IO devices. The expander shall deliver line level analog input/output on plug-in barrier strip connection. Analog-to-Digital and Digital-to-Analog conversion shall be 24-bit with a sampling rate of 48kHz.