Acer M9D User manual

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System Board
System Board 1-1
1.1 Features
The M9D is a dual-processor system board built on an ATX baseboard
that supports the Intel Pentium II CPU processor running at 266/66
MHz, 300/66 MHz, 333/66 MHz, 350/100 MHz, 400/100 MHz, and
future Intel Pentium II processors. It contains an exclusive connector
for the CPU board that carries two slots for the Pentium II CPU
modules.
The host bus interface supports a Pentium II processor with 66 or 100
MHz bus frequency. It also supports synchronous DRAM (SDRAM)
DIMMs.
The M9D supports PCI IDE, universal serial bus (USB) host/hub, and
enhanced power management. It also supports Ultra DMA/33
synchronous DMA-compatible devices.
A 50-pin Fast SCSI (Small Computer System Interface) and two 68-pin
Wide SCSIs come with the M9D to connect SCSI devices. Wide SCSI
supports 16-bit transfers while Fast SCSI uses an 8-bit bus that
doubles the clock rate to support data transfer rates of 80 Mb/s.
The M9D system board supports the USB (Universal Serial Bus)
connector, and other standard features such as two UART NS16C550
serial ports, one parallel port with Enhanced Parallel Port
(EPP)/Extended Capabilities Port (ECP) features, a diskette drive
interface, and two embedded hard disk interfaces. It also includes a
built-in 10/100 Mb/s Intel 82558 LAN chip.

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To allow better server management, the system board also supports
the optional ASM Pro and Remote Diagnostic management (RDM).
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. Meanwhile, RDM allows execution of the RDM
diagnostic program from a remote RDM station to fix detected
problems or to reboot the system.
The system is fully compatible with MS-DOS V6.X, DOS/V, IBM OS/2
Warp, Novell Netware, Novel SFT III, SCO UNIX, and Windows NT.

System Board 1-3
1.2 Major Components
The system board has the following major components:
•CPU board slot
•Two ISA and five PCI bus slots (one PCI/ISA shared slot)
•512-KB Flash ROM for system BIOS
•System clock/calendar with battery backup
•One 50-pin Fast SCSI and two 68-pin Wide SCSI interfaces
•One RDM interface (two 24-pin connectors)
•IDE hard disk and diskette drive interfaces
•Onboard 2 MB Video DRAM
•Super I/O, SCSI, VGA, memory, and Advanced Server
Management (ASM) controller chipsets
•External ports:
•PS/2-compatible keyboard port (optional AT-keyboard port)
•PS/2-compatible mouse port
•Parallel port
•Video port
•RJ-45 connector
•Universal Serial Bus (USB) connector

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1.3 Layout
Figure 1-1 shows the system board components.
1 PS/2 Mouse port
2 PS/2 Keyboard port
3 Parallel port
4 Video port
5 RJ-45 connector
6 USB connector
7 LAN controller
8 PCI slots
9 Flash ROM BIOS
10 ISA slots
11 PCI to PCI bridge chipset
12 SCSI chipsets
13 SMM connector
14 Wide SCSI connectors
15 CPU board connectors
16 Narrow SCSI connector
17 PCI chipset
18 IDE connector
19 Super I/O chipset
20 Diskette drive connector
21 I/O APIC chipset
22 RDM connectors
23 Battery
24 Power connectors
25 Video controller
Figure 1-1 System Board Layout
2
1
4
3
5
15
810
6
13
12
16
14
23 17
25
7
24
22
12
11
21 18
19
20
9

System Board 1-5
1.4 Jumpers and Connectors
1.4.1 Jumper and Connector Locations
Figure 1-2 shows the jumper and connector locations on the system
board.
Figure 1-2 System Board Jumper and Connector Locations
Jumpers are prefixed “JP”. Connectors are
prefixed “CN”. The blackened pin of a jumper
and connectors represents pin 1.

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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
VGA Disable Control
JP1 1-2*
2-3 Auto Onboard VGA disable
Password Security
JP2 1-2
2-3* Check password Bypass password
BIOS Type
JP3 1-2
2-3* Acer Fujitsu
Buzzer
JP4 1-2
2-3* Use LCD board’s buzzer Use onboard buzzer
Boot Block Function
JP5 1-2
2-3* Supports boot block function Do not support boot block function
*Default setting

System Board 1-7
1.4.3 Connector Functions
Table 1-2 lists the different connectors on the system board and their
respective functions.
Table 1-2 Connector Functions
Connector Function
CN1 Power switch connector
CN2, CN17 RDM connectors
CN3 COM 1 port connector
CN4,CN10,CN11 Power connectors
CN5 HDD LED outlet connector
CN6 Thermal inlet connector
CN7 Chassis Door Intrusion
CN8 COM2 port connector
CN9 Power LED connector
CN12 PS/2 mouse (above) / keyboard (below)
connectors
CN13 5V Standby supply and power supply connector
CN14 Debugging connector
CN15 Fail LED connector
CN16 Power supply status connector
CN18 LCD board connector
CN19 RDM LED connector
CN20 Printer/VGA outlet connector
CN21 FDD connector
CN22 IDE connector
CN23 RJ-45 LAN connector
CN24 50-pin narrow SCSI connector
CN25 USB connector
CN28 WOL adapter connector
CN29 First channel 68-pin SCSI connector
CN30 P3 hot-plug notification connector
CN31 Hot-plug LED connector

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Table 1-2 Connector Functions
Connector Function
CN32 Second channel 68-pin SCSI connector
CN33 P2 hot-plug notification connector
CN34 HDD LED inlet connector
CN35 SMM Card connector
FAN1-FAN4 Housing fan connectors

System Board 1-9
1.5 ESD Precautions
Always observe the following electrostatic discharge (ESD)
precautions before installing a system component:
1. Do not remove a component from its antistatic packaging until
you are ready to install it.
2. Wear a wrist grounding strap before handling electronic
components. Wrist grounding straps are available at most
electronic component stores.
Do not attempt the procedures described in
the following sections unless you are a
qualified technician.

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1.6 Video Function
The ATI Rage IIc VGA controller chipset is a highly integrated 64-bit
graphics accelerator that supports 2D and 3D video applications. The
board comes with a 2-MB video memory.
1.6.1 Supported Video Resolutions
The onboard video controller and MPEG decoder enable the system to
support video functions, as well as enhance the video display.
The following table lists the video resolutions that the system supports:
Table 1-3 Video Resolutions
Display
Resolution Refresh Rate Horizontal Frequency (KHz) Pixel Clock (MHz)
640 x 480 60 31.4 25.1
640 x 480 72 37.7 31
640 x 480 75 37.5 31.5
640 x 480 90 47.9 39.9
640 x 480 100 52.9 44.9
800 x 600 48 int. 33.8 36.0
800 x 600 56 35.2 36.0
800 x 600 60 37.8 39.9
800 x 600 70 44.5 44.9
800 x 600 72 48.0 50.0
800 x 600 75 46.9 49.5
800 x 600 90 57.1 56.6
800 x 600 100 62.5 67.5
1024 x 768 43 int. 35.5 44.9
1024 x 768 60 48.3 65.0
1024 x 768 70 56.4 75.0