This article describes how to enable hdmi audio on the Geekworm PiKVM hardware such as [[X650]] / [[X680]] / [[KVMPiKVM-A3]] etc , you can refer to [https://docs.pikvm.org/audio/ pikvm official audio tutorial] also.
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Unlike the official PiKVM V3 version, the Geekworm KVM hardware supports audio output by default and does not require additional jumper settings. But if you can't use audio, here are a few reasons to consider: