Keyboard And Mouse; Rj-45 Serial Port; Acpi - NEC Express5800/120Rd-2 Service Manual

Keyboard and Mouse

The keyboard/mouse controller is PS/2-compatible. The server may be locked automatically if
there is no keyboard or mouse activity for a predefined length of time. Once the inactivity
(lockout) timer has expired, the keyboard and mouse do not respond until the previously stored
password is entered. A Y-cable is included with your server and can be used if both a PS/2
mouse and keyboard are required at the same time. The keyboard and mouse are ordered
separately.

RJ-45 Serial Port

The rear RJ-45 serial port is a fully functional COM port that supports any standard serial device
and provides support for serial concentrators, which typically support RJ45 serial connectors. For
server applications that use a serial concentrator to access the server management features of the
system board, a standard 8-pin CAT-5 cable from the serial concentrator is plugged directly into
the rear RJ45 serial port. The 8 pins of the RJ45 connector can be configured to match either of
two pin-out standards used by serial port concentrators. To accommodate either standard, the
J6A2 jumper block located directly behind the rear RJ45 serial port must be jumpered
appropriately according to which standard is desired.
See Chapter 2 for detail explanation.

ACPI

The system board supports the Advanced Configuration and Power Interface (ACPI) as defined
by the ACPI 1.0 and PC97 specifications. An ACPI aware operating system can put the system
into a state where the hard drives spin down, the system fans stop, and all processing is halted.
However, the power supply will still be on and the processors will still be dissipating some
power, so the power supply fans will still run.
The system board supports sleep states s0, s1, s4, and s5:
s0: Normal running state.
!
s1: Processor sleep state. No context will be lost in this state and the processor caches
!
will maintain coherency.
s4: Hibernate or Save to Disk: The memory and machine state are saved to disk.
!
Pressing the power button or other wakeup event will restore the system state from the
disk and resume normal operation. This assumes that no hardware changes have been
made to the system while it was off.
s5: Soft off: Only the RTC section of the CSB and the BMC are running in this state. No
!
context is saved by the OS or hardware.
IMPORTANT:
disconnected.
The system is off only when the AC power cord is
System Overview 1-23