Check all that applies when troubleshooting PSU issue in a Dell Precision Rack

If a PSU indicates Blinking amber, this indicates Power supply is operational

PSU indicator will not illuminate if the power is not connected

AC PSU indicator will be blinking green during a Firmware update

AC PSU indicator blinks green five times at a rate of $4$ Hz and turns off to indicate PSU mismatch

Combining AC and DC PSU is supported