Acer M9L User Manual
& K DSWHU
System Board
1.1 Features
The system board consists of the I/O subsystem for the M9L system.
It contains an exclusive connector for the CPU board that comprise the
host subsystem.
This high-perform ance 64-bit system board utilizes both the ISA and
the PCI local bus architecture. Two ISA and five PCI bus slots reside
on the board to allow installation of either master or slave devices.
A 50-pin Fast SCSI-II interface and two 68-pin W ide SCSI interfaces
come with the system board to connect SCSI devices. External I/O
interfaces include a parallel port and a video port, RJ- 45 and two USB
connectors, and keyboard and mouse ports.
The system board supports two optional features, the ASM Pro and
the remote diagnostic management (RDM), that allow better server
management. The ASM Pro detects problems in CPU thermal
condition, CPU working voltage detection (±12V/±5V/3.3V/1.5V), and
PCI bus utilization calculation. It also detects if the CPU fan or the
chassis fan malfunctions. The RDM allows execution of the RDM
diagnostic program from a remote RDM station to fix detected
problems or to reboot the system.
System Board 1-1
1.2 Major Components
The system board has the following major components:
CPU board slot
•
Three primary and two secondary PCI bus slots
•
Two ISA bus slots
•
256-KB Flash ROM for system BIOS
•
System clock/calendar with battery backup
•
One 50-pin Fast SCSI-II and two 68-pin Wide SCSI interfaces
•
Two 24-pin RDM interfaces
•
IDE hard disk and diskette drive interfaces
•
Onboard VRAM and VRAM sockets for video memory upgrade
•
Power connector for both standard 420-watt SPS and redundant
•
420-watt SPS
Super I/O, SCSI, VGA, mem ory, Ethernet, and Advanced Server
•
Management (ASM) controller chipsets
External ports:
•
PS/2-compatible keyboard port
•
PS/2-compatible mouse port
•
Parallel port
•
Video port
•
RJ-45 connector
•
Universal Serial Bus (USB) connectors
•
1-2 User’s Guide
1.3 Layout
3
5
2
7
8
918
2
4
6
0
9
Figure 1-1 shows the system board components.
17
1
2
21
2
1
16
15
14
13
12
11
10
1 Mouse port
2 Keyboard port
3 Parallel port
4 Video port
5 RJ-45 connector
6 USB connectors
7 CPU board slot
8 Primary PCI slots
9 Secondary PCI slots
10 ISA slots
11 Flash ROM BIOS
12 Wide SCSI connector 2
13 Wide SCSI connector 1
14 Narrow SCSI connector
15 Diskette drive connector
16 EIDE connector
17 Battery
18 RDM connectors
19 Power connectors
20 Video RAM
21 Power connector
22 Video RAM upgrade sockets
Figure 1-1 System Board Layout
System Board 1-3
1.4 Jumpers and Connectors
1.4.1 Jumper and Connector Locations
Figure 1-2 shows the jumper and connector locations on the s ystem
board.
Figure 1-2 System Board Jumper and Connector Locations
Jumpers are prefixed “JP”. Connectors are
prefixed “CN”. The blackened pin of a jumper
represents pin 1.
1-4 User’s Guide
1.4.2 Jumper Settings
Table 1-1 lists the system board jumpers with their corresponding
settings and functions.
Table 1-1 System Board Jumper Settings
Jumper Setting Function
Power Supply
JP1 1-2
BIOS Type
JP2 1-2
Password Security
JP3 1-2*
5V Standby Source
JP4 1-2*
SCSI Channel 1
High-Byte Termination
JP6 1-2*
VGA Feature
JP7 1-2*
2-3
2-3*
2-3
3-4
2-3
2-3
*
420 W
200 W
With Acer logo
Generic
Check password
Bypass password
Power supply 5V standby
VCC
Terminator always set to ON
SCSI terminator set to ON or OFF
by software
Enabled/disabled through BIOS
Onboard VGA always disabled
*
Default setting
System Board 1-5
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