The VIO 4K can be upgraded with optional expansion cards. Five cards are currently supported, but only up
to three optional expansion cards can be installed (one audio card and two video cards).
15.1 Audio expansion interfaces
You can add one expansion audio card on the VIO 4K, two different audio cards are supported.
Ref. OPT-AUDIODANTE-VIO4K
The Dante audio expansion interface can instantly Dante-enable your VIO 4K multi-format converter. It
provides 8 bidirectional audio channels and full Dante network audio redundancy over Gigabit Ethernet.
The Dante audio expansion interface supports the sample frequencies of 44.1 KHz, 48 KHz and 96 KHz.
Ref. OPT-AUDIOXLR-VIO4K
The XLR audio expansion interface adds S/PDIF and AES3 inputs to your VIO 4K (4 channels – 2 stereo pairs).
It supports AES/EBU & i3D Digital Audio (XLR) as well as Analog Stereo Balanced audio (XLR).
SEE: Adjusting the XLR audio