AOpen AX65-2-HW User Manual

Chapter 2

Hardware Installation

This chapter gives you a step-by-step procedure on how to install your

system. Follow each section accordingly.

2.1 ESD Precautions

Electrostatic discharge (ESD) can damage your processor, disk drives,

expansion boards, and other components. Always observe the following

precautions before you install a system component.

1. Do not remove a component from its protective packaging until you are

ready to install it.

2. Wear a wrist ground strap and attach it to a metal part of the system unit

before handling a component. If a wrist strap is not available, maintain

contact with the system unit throughout any procedure requiring ESD

protection.

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Hardware Installation

2.2 Jumper and Connector Locations

The following figure shows the locations of the jumpers and connectors on the

system board:

J1: Two-pin fan connector JP3 and JP5: CPU external freq.
J3: ATX power connector select jumper
J4: FDD connector JP4: CPU bus ratio select jumper
J5: Primary IDE connector JP6: Super I/O controller function
J6: Secondary IDE connector jumper
JP13: IrDA connector JP7: Keyboard clock jumper
JP14: Software power switch jumper JP8: P/2 mouse function jumper
JP15: HDD LED connector JP9: Reserved jumper
JP23: Multifunction connector JP10: CMOS jumper
CN1: COM1 port JP11 and JP12: Intel Flash ROM
CN2: PS/2 mouse connector programming jumper
CN3: PS/2 keyboard connector
CN4: Parallel port
CN5: COM2 port

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2.3 Setting the Jumper

Set a jumper switch as follows:

• To open a jumper, remove the

jumper cap.

• To close a jumper, insert the

plastic jumper cap over two pins of

a jumper.

The conventions in the figure are used

to represent the proper jumper settings.

Hardware Installation

Open

Closed (1-2)

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Hardware Installation

2.4 Installing a Microprocessor

The motherboard comes with a ZIF microprocessor socket that allows you to

install a CPU without using any tool.

Follow these steps to install a CPU into a ZIF-type CPU socket:

Make sure that the system power is OFF before
installing a component.

1. Locate the CPU socket on the

system board and pull up the

socket lever.

2. Align pin 1 of the CPU with hole 1

of the socket. The dot on the CPU

indicates pin 1. The topmost label

indicates the CPU frequency and

the cache size.

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Hole 1 CPU frequency

L2 cache
size
supported

Pin 1 indicator

3. Gently insert the CPU into the

socket.

4. Pull down the socket lever to lock

the CPU into the socket.

Hardware Installation

5. Attach the heatsink and fan to the CPU.

With four-pin fan connector

With two-pin fan connector

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Hardware Installation

6. Plug in the fan cable to the two-pin

+12V

fan connector onboard. The fan

connector is marked J1 on the

system board. If your fan cable

has four pins, plug it into the

connector on the power supply

2-pin fan power connector (J2)

unit.

7. Set jumpers JP3, JP4 and JP5

CPU FREQUENCY SELECT

according to the frequency

supported by the CPU currently

JP3 JP4 JP5

installed on your board.

150 MHz

166 MHz

180 MHz

200 MHz

2.5 Upgrading the Microprocessor

GND

GND

To upgrade a CPU:

1. Turn off the system power and remove the housing cover.

2. Locate the CPU socket on the system board.

3. Pull up the socket lever.

4. Remove the installed CPU, if any.

5. Install the upgrade CPU. Refer to section 2.4 for instructions on how to

install a CPU.

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Hardware Installation

2.6 Configuring the System Memory

The system memory is expandable to 512 MB by adding single in-line

memory modules (SIMMs). The four 72-pin SIMM sockets accommodate

4-, 16- and 64-MB single-density SIMMs, and 8- and 32-MB double-density

SIMMs. These SIMM sockets also accept both FPM and EDO type DRAMs,

with or without parity. The EDO feature extends the data transfer cycle, thus

improves memory performance. All SIMMs support a DRAM speed of 60/70

ns or less.

The SIMMs with parity supports the ECC (Error Checking and Correction)

feature that enables the system to detect and correct data errors. To fully

support this function, you must install 36-bit parity-type SIMMs (i.e., 8 chips

plus 4 parity chips) in pairs in all banks. The combination of 32-bit non-parity

(i.e., 8 chips) and 36-bit parity-type (i.e., 12 chips) memory configuration is

also possible; however, this does not allow you to make use of the ECC

function.

The following are the possible SIMM configurations. Notice that you must

install the same SIMMs in one bank.

Memory Configurations

Bank 0 Bank 1 Total

SIMM 1 SIMM 2 SIMM 3 SIMM 4 Memory

4 MB 4 MB 8 MB

4 MB 4 MB 4 MB 4 MB 16 MB

8 MB 8 MB 16 MB

8 MB 8 MB 4 MB 4 MB 24 MB

8 MB 8 MB 8 MB 8 MB 32 MB

16 MB 16 MB 32 MB

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