The Boundless switch function of CS724KM is enable for default, Upgrade  CS724KM FW to V1.2.112 or newer version, then press  [Num] + [-] + [Y] + [Enter] / [Ctrl] + [F12] + [Y] + [Enter] can disable the Boundless switch function. press again can enable Boundless switch function

 

To upgrade the firmware, please download the firmware and manual from 

https://www.aten.com/global/en/supportcenter/downloads/?q=CS724KM

Please check the manual for how to upgrade firmware. 

If still have problems, please contact ATEN Tech Support