This Pi-KVM device has running kvmd-vnc daemon and provides VNC access to the server.
WARNING! We strongly don't recommend you to use VNC in untrusted networks without enabled X.509 or TLS encryption. Otherwise your passwords are transmitted in a plain text over the network.
Your VNC client must support Tight JPEG compression and password authentication. TigerVNC is a good choice. On Linux, this client will most likely be available for installation from the repository. It can also be called vncviewer.