There is no HDMI signal at BIOS level until the Windows 11 OS is booting if the HDMI port is connected to Dell Latitude 5420 notebook. However, I can get HDMI signal at BIOS level if the KVM switched to use HP ProDesk 600 G4 HDMI port.
Besides, both Dell Latitude 5420 and HP ProDesk 600 G4 have no respond the MOUSE and KEYBOARD they are going to boot the OS. Therefore, I would like to know whether it is normal
The laptop may output the BIOS screen by default to the built-in screen, and basically no way to perform bios control on the laptop
both Dell Latitude 5420 and HP ProDesk 600 G4 have no respond the MOUSE and KEYBOARD they are going to boot the OS Can you describe this in detail?
The keyboard icon shown "Keyboard free, inactive" and Mouse icon shown "Mouse free, inactive". The color of these two icons are orange