In excellent working condition.

The Focusrite RedNet PCIeR is a professional Dante audio interface card that connects a computer to an audio network over Ethernet. It provides high channel counts, low latency, and redundant network connections for recording, live sound, and broadcast systems. Focusrite

The main consideration today is compatibility: Focusrite says the PCIeR is no longer under active development or support, and it has significant limitations with newer computers. Compatibility Statement – Focusrite

Key specificationsFeatureRedNet PCIeRChannels at 44.1, 48, 88.2, or 96 kHz128 inputs + 128 outputs simultaneouslyChannels at 176.4 or 192 kHz64 inputs + 64 outputs simultaneouslyAudio resolution24-bitComputer connectionPCI Express x4; compatible Thunderbolt-to-PCIe expansion chassis can also be usedNetwork connectionsTwo Gigabit Ethernet RJ45 ports: primary and secondaryRedundancyAutomatic switching between primary and secondary networksAudio driversASIO for Windows; Core Audio for compatible Intel MacsPublished latencyApproximately 1.6 ms round trip, with RedNet analogue I/O at 96 kHzAdditional network standardAES67 support

Computer compatibility

Apple Silicon Macs: Incompatible with M1, M2, and later Apple Silicon systems.

AMD Ryzen computers: Unsupported and not recommended by Focusrite.