14LED DisplayThe front panel has three LEDs sections that indicate the power, HDMIsources and the computer USB connection status. The LEDs light green ororange depending on which source is being accessed on what computer, asexplained in the tableLED Sections Indication1 Power Lights BRIGHT GREEN indicates power is connected2 HDMI Input FLASH GREEN in turns between 1,2,3,4 indicates the machine is inbooting and stop flashing when completed.Normal booting time is about 7 seconds LED indication number is corresponding with the HDMI source thatplug in in the back of machine. Always light BRIGHT GREEN indicates the HDMI source isconnected. FLICKER GREEN lights unsteadily that indicates a machine problemhas encountered3 Status USB LED indication number is corresponding with computer USB that plugin the back of machine. Always light BRIGHT GREEN indicates a computer USB is connectedLink USB Always light BRIGHT ORANGE indicates the KVM is selected on acomputer