System Board Features

The system board functions as the main interface between the processor, memory, and peripherals.

Table 1 lists the features of the system board. Figure 3 on page 11 shows the components on the system board and their locations.

 

Table 1: System Board Features

 

 

Feature

Description

Processor

Installed: Up to four Pentium® II Xeon™ processors, in single

 

edge contact (SEC) cartridges installed in Slot 2 connectors.

 

Includes connectors for six VRM 8.3-compliant plug-in voltage-

 

regulator modules (VRMs).

 

 

Main memory

Single plug-in module containing 16 dual in-line memory module

 

(DIMM) sockets for up to 4 GB of extended data output (EDO)

 

dynamic random access memory (DRAM).

 

Installed: 256 MB–4 GB of EDO error correcting code (ECC)

 

random access memory (RAM).

 

 

Video memory

Installed: 2 MB of video memory.

 

 

PCI bus(es)

PCI-A—Three expansion connectors

 

PCI-B—Four expansion connectors (one shared with the

 

ISA slot)

 

 

ISA bus

One expansion slot for expansion boards (shared with a

 

PCI-B slot).

 

 

Server management

Thermal/voltage monitoring and error handling.

 

Front panel controls and indicator light emitting diodes (LEDs).

 

 

Graphics

Integrated onboard Cirrus Logic GD5480 super video graphics

 

array (SVGA) controller.

 

 

SCSI

Two embedded small computer systems interface (SCSI)

 

controllers:

 

Symbios SYM53C810AE—narrow SCSI controller providing

 

support for legacy 8-bit SCSI devices

 

Symbios SYM53C896—dual-channel wide low voltage

 

differential (LVD)/single-ended (SE) (ultra2/ultra) SCSI controller

 

driving one SCSI backplane in the system and providing support

 

for external expansion.

 

 

System I/O

PS/2-compatible keyboard and mouse ports, parallel port,

 

video port, USB port, and two serial ports (serial port 1 is the left

 

connector).

 

 

System Board Connectors

Figure 3 shows the connectors on the system board. Some of these connectors may not be used, depending on the configuration of the server. The table below provides the key to Figure 3.

10 Maintaining and Troubleshooting the Gateway ALR 9200 Server