IBM Enterprise Server H80 Series - Manual (Page 25)

Console Strategy
The firmware starts a console-selection sequence at system boot time if any of the
following are true:
A console has not yet been selected
A previous console-selection sequence timed-out
A change in the system configuration has affected the console (keyboard
installed/removed, mouse installed/removed, graphics adapter installed/removed
or moved to another PCI slot).
The console-selection sequence allows you to select (from the appropriate input
device) any one of the available console devices. If no console is selected within
approximately 60 seconds, serial port 1 (S1) is selected as the console and the
selection sequence times-out.
Attention: If an ASCII terminal is attached to serial port 1 (S1), and there is any
interaction with this terminal:
After OK displays in the operator panel
AND
Before the power-up sequence is initiated
the firmware will still use this terminal as the console, regardless of the previous
console selection.
After a console has been selected, the console-selection sequence is only started at
boot time if there is a change in the system configuration (as described above), or
the contents of the system's nonvolatile memory (NVRAM) are lost.
Note: Moving an ASCII terminal from one serial port to another (from S1 to S2)
cannot be detected by the firmware, so it does not constitute a configuration change.
You can also initiate a system console-selection sequence from the SMS menus.
Chapter 2. Using the Model H80 9