Mic-In; Line-In; Rs232; Rs232/422/485 - Quanmax QBOX-2090 Series User Manual

QBOX-2090 Series - User Guide, Rev. 1.2

4.2.5. Mic-In

The microphone jack is designed to connect the microphone used for video conferencing, voice narrations, or simple
audio recordings.

4.2.6. Line-In

The Line-in jack is designed to take input from a higher-powered sound source.

4.2.7. RS232

COM 3 and COM 4 are provided as a 9-pin D-SUB connector; they are RS232 configured and allow the connection of a
serial peripheral.

4.2.8. RS232/422/485

COM 1 and COM 2 are provided as a 9-pin D-SUB connector and allow the connection of a serial peripheral. They are
designed to support RS232/422/485 serial communication which can be configured via BIOS setup.
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