NEC Express 5800/120Lg, Service Manual

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1-14 System Overview
The Network controller supports the following features:
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64-bit, 100 MHz PCI-X interface
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Integrated IEEE 802.3 10Base-T, 100Base-TX, and 1000Base-T compatible
PHY
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IEEE 820.3u auto-negotiation support
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Chained memory structure similar to the 82557, 82558, 82559 and 82596
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Full duplex support at 10 Mbps, 100 Mbps, and 1000 Mbps operation
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Low power +3.3 V devices.
On the system board, NIC1 can be used as both a network interface and server
management interface.
Keyboard and Mouse
The keyboard/mouse controller is PS/2-compatible.
RJ-45 Serial Port
The rear RJ-45 serial port is a fully functional serial port that supports any standard
serial device and provides support for serial concentrators. For server applications that
use a serial concentrator to access the server management features of the mother board,
a standard 8-pin CAT-5 cable from the serial concentrator is plugged directly into the
rear RJ-45 serial port. The 8 pins of the RJ-45 connector can be configured to match
either of two pin-out standards used by serial port devices.
To accommodate either standard, the J5A2 jumper block located directly behind the
rear RJ-45 serial port must be jumpered appropriately according to the desired standard.
ACPI
An Advanced Configuration and Power Interface (ACPI) aware operating system can
place the system into a state where the hard drives spin down, the system fans stop, and
all processing is halted. However, in this state the power supply is still on and the
processors are still dissipating some power such that the power supply fan and
processor fans are still running.
Note: ACPI requires an operating system that supports its
feature.
!
CAUTION
Only when the AC power is disconnected is the system completely
off.
The sleep states are defined as follows:
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s0: Normal running state.