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Table of Contents

1 Motherboard Description

1.1

Overview...................................................................................................................... 7

1.2

Motherboard Manufacturing Options ........................................................................... 9

1.3

Form Factor ................................................................................................................. 9

1.4

I/O Shield................................................................................................................... 10

1.5

Microprocessor .......................................................................................................... 11
1.5.1

Microprocessor Upgrade ............................................................................. 11

1.5.2

Microprocessor Heatsink and Clips ............................................................. 11

1.6

Main System Memory ................................................................................................ 12
1.6.1

DRAM.......................................................................................................... 12

1.6.2

Parity and ECC DRAM ................................................................................ 12

1.7

Chipset ...................................................................................................................... 12
1.7.1

82441FX PCI Bridge and Memory Controller (PMC) ................................... 12

1.7.2

82442FX Data Bus Accelerator (DBX) ........................................................ 13

1.7.3

82371SB PCI/ISA IDE Xccelerator (PIIX3).................................................. 13

1.7.4

IDE Support................................................................................................. 14

1.7.5

Secure Flash Support.................................................................................. 14

1.7.6

USB Support ............................................................................................... 14

1.8

PC87307 Super I/O Controller ................................................................................... 15
1.8.1

Floppy Controller ......................................................................................... 15

1.8.2

Keyboard and Mouse Interface ................................................................... 15

1.8.3

Real-Time Clock, CMOS RAM and Battery ................................................. 16

1.8.4

Infrared Support .......................................................................................... 16

1.8.5

Parallel Port................................................................................................. 16

1.9

Graphics Subsystem.................................................................................................. 16
1.9.1

S3 ViRGE Graphics Subsystem .................................................................. 17

1.9.2

S3 ViRGE/DX Graphics Subsystem ............................................................ 18

1.9.3

LBP VESA Feature Connector .................................................................... 18

1.9.4

Graphics Drivers and Utilities ...................................................................... 18

1.10 Audio Subsystem....................................................................................................... 19
1.11 Management Extension Hardware............................................................................. 19
1.12 Motherboard Connectors ........................................................................................... 20

1.12.1

Front Panel Connectors............................................................................... 22

1.12.2

Memory/Expansion Connectors................................................................... 25

1.12.3

VESA Feature Connector ............................................................................ 27

1.12.4

Serial Header .............................................................................................. 27

1.12.5

Audio Connectors........................................................................................ 28

1.12.6

Power Supply Connectors ........................................................................... 29