# KVM Switch HDR, VRR, G-SYNC and FreeSync Compatibility Guide

> Test refresh first, then HDR, then VRR, and record driver/display status after every change rather than troubleshooting all variables simultaneously. Treat HDR and VRR as separate capabilities that must survive the entire source-to-display chain. The acceptance case is preserving variable refresh and HDR behavior while a gaming display is routed through a KVM. The failure to guard against is this: a KVM can pass basic video while one feature disappears because EDID, HDCP, color depth, DSC, firmware or interface conversion changes the negotiated mode.

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## Primary source
- [KVM Switch HDR, VRR, G-SYNC and FreeSync Compatibility Guide](https://cloudzat.com/kvm-switch-hdr-vrr-gsync-freesync/index.md)

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