Chapter 3 System Boards; Main Board - Acer Altos 21000 Series User Manual

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Chapter 3
The system boards consist of the main board, the memory board, the SCSI
backplane board, and the LCD display module.
system boards in detail.
3.1

Main Board

The main board has the following major components:
Four Slot 2 CPU connectors that support one, two, three, or four Intel
Pentium II Xeon processors:
512-KB Flash ROM for system BIOS
Supports two PCI buses through one PXB (PCI Expander Bridge)
One 68-pin Ultra2 Wide SCSI connector for each SCSI channel
One 50-pin SCSI connector
Server management functions
PCI SVGA on-board with 2MB VGA RAM
Enhanced IDE hard disk and diskette drive interfaces
Seven PCI slots with one ISA and one PCI-/ISA-shared
One dual channel PCI Ultra/Wide and LVD (Ultra2) SCSI controller
System Boards
This chapter discusses the
Chapter 3 - System Boards
3-1

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