Acer AcerPower 6500 User manual

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System Board

System Board 1-1

This high-performance system board is built on an ATX baseboard

utilizing an Intel PentiumII processor running at 233/66, 266/66, and

300/66 MHz. It has two ISA, four PCI, and one AGP slots (with one

PCI- and ISA-shared slot) for future expansion. The onboard three

DIMMs sockets allow memory upgrade to a maximum of 384 MB and

supports both SDRAM and EDO DRAM memory.

It also supports the USB (Universal Serial Bus) connector, and other

standard features such as two UART NS16C550 serial ports, one

enhanced parallel port with Enhanced Parallel Port (EPP)/Extended

Capabilities Port (ECP) feature, a diskette drive interface, and an

embedded hard disk interface. The system has an optional IrDA

(Infrared Data Association) interface for remote control function. The

board also include a built-in 10/100 Mb/s Intel 82558 LAN chip that

supports Wake-On-LAN (WOL).

The system supports the power-management function that conforms

to the power-saving standards of the U.S. Environmental Protection

Agency (EPA) Energy Star program. It also offers the Plug-and-Play

feature. This feature saves the user from configuration troubles, thus

making the system more user-friendly.

The system is fully compatible with MS-DOS V6.X, OS/2, UNIX,

Windows NT and Windows 95 operating systems.

1-2 User’s Guide

1.1 Features

The system board has the following features and components:

•Intel Pentium II CPU processor (233/66, 266/66, and 300/66

MHz.)

•384-MB maximum system memory

•Three DIMM sockets that accept 8-, 16-, 32-, 64- and 128-MB

DIMMs

•256-KB or 512-KB pipelined-burst second-level cache built-in

Pentium II CPU

•Integrates an enhanced PCI local bus IDE controller

•Intel 440LX chipset supports AGP (Accelerated Graphics Port)

and Ultra DMA/33 functions

•256KB Flash ROM for system BIOS

•Two ISA, four PCI, and one AGP expansion slots (one PCI- and

ISA-shared slot)

•Dual NS16C550 buffered serial ports and one SPP/ECP/EPP

parallel port

•Intel 82558 LAN chip, supports WOL.

•USB interface that enables the system to support more

peripherals

•IrDA Interface supported (optional)

•PS/2 mouse and keyboard interface

•Power-management function

System Board 1-3

1.2 System Board Layout

Figure 1-1 shows the board layout and the locations of the important

components.

1 CPU port 15 AGP slots

2 Fan connector 1,2, and 3 16 PCI slots

3 Voltage Regulator with Heatsink 17 ISA slots

4 DIMM sockets 18 Wake on LAN (WOL) connector

5 System Chipset FX82443LX 19 Standby Power connector

6 RTC battery 20 Power Connector

7 IDE 2 connector 21 LAN Connector

8 IDE 1 connector 22 COM 1 port

9 System Chipset PIIX4 82371AB 23 COM 2 port

10 Multifunction connector 24 Parallel port

11 System Chipset FDC37C935 25 PS/2 keyboard connector

12 Floppy connector 26 PS/2 mouse connector

13 System BIOS Chip 27 USB ports

14 Core/Bus Clock switch

Figure 1-1 System Board Layout

1210

1-4 User’s Guide

The heatsink becomes very hot when the

system is on. NEVER touch the heatsink with

any metal or with your hands.

1.3 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 grounding strap and attach it to a metal part of the

system unit before handling components. If a wrist strap is not

available, maintain contact with the system unit throughout any

procedure requiring ESD protection.

System Board 1-5

1.4 Pre-installation Instructions

Always observe the following before you install a system component:

1. Turn off the system power and all the peripherals connected to the

unit before opening it.

2. Open the system according to the instructions in the housing

installation manual.

3. Follow the ESD precautions in section 1.3 before handling a

system component.

4. Remove any expansion boards or peripherals that block access to

the DIMM sockets or CPU socket.

5. See the following sections for specific instructions on the

component you wish to install.

Do not attempt the procedures described in

the following sections unless you are a

qualified service technician.

1-6 User’s Guide

1.5 Pentium II Processor

The board supports the Pentium II processor - a module that consists

of a Pentium Pro technology-based CPU and a second-level cache. It

utilizes the new enclosed packaging technology called S.E.C (single-

edge contact) cartridge, that allows the second-level cache to remain

tightly coupled to the processor. It is capable of increasing the

performance of 32-bit software and multimedia applications

The Pentium II processor also supports the following features:

•64-bit Pentium Pro technology-based CPU running a 233 or 266

MHz

•MMX technology support for multimedia functions

•32-KB internal cache size

•256-/512-KB write-back second-level cache size

•Non-blocking architecture to prevent CPU stalls during cache,

memory and I/O accesses

System Board 1-7

1.5.1 Installing a Pentium II Processor

Observe the ESD precautions when installing

or removing a system component.

Follow these steps to install a Pentium II processor:

1. Place the retention mechanism over the CPU connector on the

system board. Secure it with the screws that came with the

package.

Figure 1-2 Installing the Retention Mechanism

2. Remove the Pentium II processor from its protective packaging.

Make sure that the latches on the sides of the module are not

pressed.

3. With the processor card golden fingers pointing downward, align

the processor to the posts of the retention mechanism.

4. Lower the processor into to the CPU connector on the system

board until the golden fingers touch the connector.

1-8 User’s Guide

5. Press down the processor until the golden fingers completely fit

into the connector and the latches on the sides lock the processor

into place.

Figure 1-3 Installing a Pentium II Processor

System Board 1-9

1.5.2 Removing a Pentium II Processor

Observe the ESD precautions when installing

or removing a system component.

Follow these steps to remove the Pentium II processor:

1. Press the latches on both sides of the processor to release it from

the retention mechanism. You will hear a click sound once the

latch is released.

2. Pull the processor to totally detach it from the CPU connector.

Figure 1-4 Removing a Pentium II Processor

1-10 User’s Guide

1.6 Jumpers and Connectors

Figure 1-5 shows the jumper and connector locations.

Figure 1-5 Jumper and Connector Locations

The shaded pin indicates pin 1.

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