Mac Pro (2019) status indicator light behaviour
Find out more about the different status indicator light patterns that you may see on your Mac Pro.
Turned off
When a Mac Pro is turned off, the status indicator light is not illuminated.
Turned on or in sleep mode
After a Mac Pro has been turned on or is in sleep mode, the status indicator light will be solid white and remain on until the computer is turned off.
Memory error
If there is a memory detection or data error, the status indicator light will turn solid amber for 0.2 seconds, repeating every second. Verify your memory and install or replace memory if necessary.
Housing unlocked or top cover removed while computer is turned on
If the computer is turned on and you unlock the housing, or open the top cover or access door on rack-mounted models, the status indicator light will turn solid amber for 0.3 seconds, repeating until the housing is locked or the top cover or access door has been reinstalled.
Power button pressed while housing is unlocked or top cover has been removed
If the housing is unlocked, or the top cover has been removed on rack-mounted models, and the power button is pressed, the status indicator light will turn solid amber for half a second. Make sure the housing is fully seated and locked, or that the top cover has been installed and the latches have been locked, then try starting up your Mac Pro again.
PCIe card error
If a Mac Pro encounters an error with a PCIe card, the status indicator light will flash amber twice, repeating until the computer is turned off. If you have recently installed a PCIe card, find out how to resolve PCIe card errors on your Mac Pro.
Firmware recovery mode
If a Mac Pro is in firmware recovery mode, the status indicator light will rapidly flash amber three times, briefly flash amber three times, then rapidly flash amber three times. This sequence will repeat until the computer is turned off. You may need to revive the firmware on your Mac Pro. If you still need help, contact an Apple Authorised Service Provider.
