Chapter 2. Components

This chapter locates and describes major components on the system board. The chapter also provides information on the integrated controllers and hardware monitoring.


Warning: Before touching the system board or its components, disconnect the system's power cord from its AC power outlet.



Warning: System board components may be at high temperatures. Allow time for them to cool before handling them.



Warning: System board components can be damaged by static electricity. Use an antistatic wrist strap connected to the bare metal of the system's chassis to protect against electrostatic discharge.


Processors

The system board contains two Intel SC242 (Slot 1) processor sockets. Each socket has an associated voltage regulator integrated on the system board.

Figure 2-1. Installed Processor

Installed Processor

Each processor socket accepts an Intel Pentium III processor (133 MHz front-side bus). The processor is secured to its socket by retention clips on both sides. The retention clips are secured by nuts to screws attached to the system board.

Figure 2-2. Processor Attachment

Processor Attachment

The system can function with one or two processors installed. For a single-processor system, a processor bus terminator card must be installed in the unused processor socket. For a dual-processor system, both processors must be the same speed.

Figure 2-3. Processor Bus Terminator Card

Processor Bus Terminator Card

Memory Modules

The system board includes sockets for up to six PC133 dual inline memory modules (DIMMs). The memory speed matches the system board's front-side bus speed.

Memory module sockets are organized into four banks (Bank 0 through Bank 3) of two sockets each that use two-way memory interleaving.

Figure 2-4. Memory ModuleSockets and Banks

Memory ModuleSockets and Banks

Each socket accepts a 168-pin registered Synchronous Dynamic RAM (SDRAM) DIMM. Each DIMM has a 128-bit memory width and 16-bit error correcting code (ECC) protection.

Each socket is keyed for proper DIMM insertion. Release tabs on each end of the socket capture the DIMM and secure it in the socket.

Figure 2-5. Dual Inline Memory Module (DIMM) Insertion

Dual Inline Memory Module (DIMM) Insertion

DIMM terminator modules (similar to the one shown in the following figure) are installed in Bank 1 instead of standard DIMMs.

Figure 2-6. DIMM Terminator Module

DIMM Terminator Module

To avoid damaging a DIMM and voiding its warranty, take the following precautions:

  • Do not remove the DIMM from its antistatic package until you are ready to install it.

  • Do not touch the metallic finger contacts.

  • Do not bend, twist, drop, or otherwise handle the DIMM carelessly.

  • Do not expose the DIMM to moisture or extreme temperatures.

When adding or replacing system memory on all system boards:

  • Install DIMMs first in Bank 3, then in Bank 2, and finally in Bank 0.

  • Do not replace DIMM terminator modules in Bank 1 with standard DIMMs.

  • Ensure all installed DIMMs are PC133 (133 MHz). Do not mix DIMMs of different speeds.

  • Use only registered DIMMs. Do not use unbuffered DIMMs.

  • Install DIMMs in both sockets of a bank. Do not install only one DIMM in a bank.

  • Install the same size DIMM in both sockets of a bank. You can vary DIMM sizes from bank to bank, but not within a bank.

A system board can have up to 6,144 MB of system memory, in increments of 256 MB, 512 MB, and 1,024 MB. The following are common configurations.

Table 2-1. Memory Configurations

Memory

Bank 3

Bank 2

Bank 0

256 MB

2 x 128 MB

 

 

512 MB

2 x 128 MB

2 x 128 MB

 

 

2 x 256 MB

 

 

768 MB

2 x 128 MB

2 x 128 MB

2 x 128 MB

 

2 x 128 MB

2 x 256 MB

 

1,024 MB

2 x 128 MB

2 x 128 MB

2 x 256 MB

 

2 x 256 MB

2 x 256 MB

 

 

2 x 512 MB

 

 

2,048 MB

2 x 256 MB

2 x 256 MB

2 x 512 MB

 

2 x 512 MB

2 x 512 MB

 

 

2 x 1,024 MB

 

 

3,072 MB

2 x 512 MB

2 x 512 MB

2 x 512 MB

 

2 x 512 MB

2 x 1,024 MB

 

4,096 MB

2 x 512 MB

2 x 512 MB

2 x 1,024 MB

 

2 x 1,024 MB

2 x 1,024 MB

 

5,120 MB

2 x 1,024 MB

2 x 512 MB

 

6,144 MB

2 x 1,024 MB

2 x 1,024 MB

2 x 1,024 MB


Expansion Sockets

The system board includes sockets for up to seven expansion cards, as follows:

  • One full-length Accelerated Graphics Port (AGP) Pro socket

  • Two full-length fast/wide Peripheral Component Interconnect (PCI) socket (64 bits, 66 MHz/33 MHz, 3.3 V)

  • Four full-length wide PCI socket (64 bits, 33 MHz, 5 V)

  • One full-length Industry Standard Architecture (ISA) socket (16 bits)

When installing expansion cards, note the following:

  • All PCI sockets support Universal adapters.

  • An expansion card can be installed in either socket 7 (wide PCI or ISA), but not in both.

    Figure 2-7. Expansion Sockets

    Expansion Sockets

Power and Data Connectors

The system board contains two 20-pin ATX power connectors. These connectors accept power cables (P1 and P2) from the system's power supply. The connectors are keyed for proper connection.

The system board contains five data connectors, immediately below the power connectors. These connectors accept data cables from the system's peripheral devices. The connectors are keyed for proper connection.


Warning: For continued protection against fire and energy hazards, do not connect an external SCSI port to SCSI Channel B. Connect an external SCSI port only to SCSI Channel A.

Figure 2-8. Power and Data Connectors

Power and Data Connectors

Fan Connectors

The system's rear fan connects to one of the 3-pin CPU FAN connectors (shown in the following figure). The connectors are keyed for proper connection. The rear fan in a tower chassis connects to the FAN4 connector to the left of and between the processor sockets. The rear fan in a rack-mount chassis connects to the FAN3 connector below and to the right of the lower processor socket.

Figure 2-9. Fan4 Connector

Fan4 Connector

Figure 2-10. Fan3 Connector

Fan3 Connector

Fans in the front of the chassis connect to one of the 3-pin FAN1 or FAN2 connectors in the lower-right corner of the system board.

Figure 2-11. Fan1 and Fan Connectors

Fan1 and Fan Connectors

ATAPI Connectors

The system board has four 4-pin Advanced Technology Attachment Packet Interface (ATAPI) connectors. The connectors are keyed for proper connection.

Table 2-2. ATAPI Connectors

ATAPI Connector

Function

CD IN

Connects to the audio cable from the system's CD-ROM drive.

Pin 1=CD In Left, Pins 2 and 3=Ground, Pin 4=CD In Right

VIDEO IN

Connects to the audio cable from an internal device such as a TV tuner expansion card.

Pin 1=Left Line In, Pins 2 and 3=Ground, Pin 4=Right Line In

MONO IN

Connects to the mono audio signal cable from a modem or other telephony device.

Pin 1=Audio Out, Pins 2 and 3=Ground, Pin 4=Audio In

MPEG IN

Connects to the cable carrying the decoded audio signal from a DVD player or similar device.

Pin 1=Left Line In, Pins 2 and 3=Ground, Pin 4=Right Line In

Figure 2-12. (ATAPI) Connectors

(ATAPI) Connectors

Jumper Connectors

Jumper connectors on the system board connect to system components or provide essential system functions.

Table 2-3. Jumper Connectors

Jumper Connector

Function

J22

Connects to chassis intruder alert switch.

J24

Connects to power switch, power LED, and disk drive LED. Cable connects to top eight pins.

J29

Causes CMOS reset. Instructs basic input/output system (BIOS) to use factory settings, clears BIOS Setup password, and forces BIOS Setup at each system boot. See Chapter 3, "BIOS Setup," for instructions to use CMOS reset.

JP3

Spread spectrum control. If factory installed, do not remove. (See figure on following page.)

Figure 2-13. Jumper Connectors

Jumper Connectors

Figure 2-14. JP3 Spread Spectrum Control

JP3 Spread Spectrum Control

I/O Port Connectors

The input/output (I/O) port connectors are stacked on the system board adjacent to the processor sockets.

Figure 2-15. Input/Output (I/O) Port Connectors

Input/Output (I/O) Port Connectors

Keyboard, Mouse

Keyboard and mouse ports are PS/2-style 6-pin male min-DIN connectors. The functionality of the two ports is not interchangeable. The keyboard is powered by standby power. The keyboard port color is purple; the mouse port color is green.

Figure 2-16. Keyboard or Mouse Ports

Keyboard or Mouse Ports

Table 2-4. Keyboard/Mouse Ports

Pin

Signal

1

KDATA (keyboard)

MDATA (mouse)

2

Spare

3

Ground

4

VCC

5

KCLK

6

Spare


Parallel

The parallel port is a 25-pin female D-sub connector. The port color is burgundy.

Figure 2-17. Parallel Port

Parallel Port

Table 2-5. Parallel Port

Pin

Signal

Pin

Signal

1

Strobe

10

Acknowledge (-ACK)

2

Data 0

11

Busy

3

Data 1

12

Paper Empty (PE)

4

Data 2

13

+Select

5

Data 3

14

Auto Feed (-Auto FDXT)

6

Data 4

15

-Error

7

Data 5

16

Start (-Init)

8

Data 6

17

Select (-SLCTIN)

9

Data 7

18-25

Ground


Serial

Serial (COM) ports are 9-pin male D-sub connectors. The port color is teal.

Figure 2-18. Serial Port

Serial Port

Table 2-6. Serial Port

Pin

Signal

Pin

Signal

1

Data Carrier Detect (DCD)

6

Data Set Ready (DSR)

2

Receive Data (RD)

7

Request to Send (RTS)

3

Transmit Data (TD)

8

Clear to Send (CTS)

4

Data Terminal Ready (DTR)

9

Ring Indicator (RI)

5

Ground

 

 


Universal Serial Bus

Universal Serial Bus (USB) ports are 8-pin female USB connectors.

Figure 2-19. Universal Serial Bus (USB) Port

Universal Serial Bus (USB) Port

Table 2-7. Universal Serial Bus (USB) Port

Pin

Signal

Pin

Signal

A1

Power

B1

Power

A2

-

B2

-

A3

+

B3

+

A4

Ground

B4

Ground


Ethernet Network

The Ethernet Network port is an 8-pin RJ45 connector.

Figure 2-20. Ethenet Network Port

Ethenet Network Port

Table 2-8. Ethernet Network Port

Pin

Signal

Pin

Signal

1

Transmit (TD+)

5

Reserved

2

Transmit (TD-)

6

Receive (RD-)

3

Receive (RD+)

7

Reserved

4

Reserved

8

Reserved


External Wide Ultra2 SCSI (LVDS)

The external Wide Ultra2 SCSI (LVDS) port is a 68-pin female SCSI connector. Pins not listed are connected to ground.

Figure 2-21. External Wide Ultra2 SCSI (LVDS) Port

External Wide Ultra2 SCSI (LVDS) Port

Table 2-9. External Wide Ultra2 SCSI (LVDS) Port

Pin

Signal

Pin

Signal

17

TERMPWR

50

Ground

18

TERMPWR

52

TERMPWR

35

SD-(12)

53

No connection

36

SD-(13)

54

Ground

37

SD-(14)

55

SATII-

38

SD-(15)

56

Ground

39

SDP1-

57

SBSY-

40

SD-(0)

58

SACK-

41

SD-(1)

59

SRSI-

42

SD-(2)

60

SMSG-

43

SD-(3)

61

SSEL-

44

SD-(4)

62

SCD-

45

SD-(5)

63

SREQ-

46

SD-(6)

64

SIO-

47

SD-(7)

65

SD-(8)

48

SDP0-

66

SD-(9)

49

Ground

67

SD-(10)

51

TERMPWR

68

SD-(11)


Audio Line Out, Line In, Microphone

The Audio Line Out, Line In, and Microphone ports are PC-standard 1/8-inch female phone jacks. The Audio Line Out port color is lime; the Audio Line In port color is light blue; and the Microphone port color is pink.

Figure 2-22. Audio Line Out, Line In, and Microphone Ports

Audio Line Out, Line In, and Microphone Ports

Table 2-10. Audio Line Out, Line In, and Microphone Ports

Pin

Signal

Shield

Ground

Tip

Left (line) / Mic (microphone)

Ring

Right (line) / Bias (microphone)


MIDI/Game

The MIDI/Game port is a 15-pin female D-sub connector. The port color is gold.

Figure 2-23. MIDI/Game Port

MIDI/Game Port

Table 2-11. MIDI/Game Port

Pin

Signal

Pin

Signal

1

=5 V

9

=5 V

2

Fire button 0

10

Fire button 2

3

X-axis, joystick 1

11

X-axis, joystick 2

4

Ground

12

MIDI out

5

Ground

13

Y-axis, joystick 2

6

Y-axis, joystick 1

14

Fire button 3

7

Fire button 1

15

MIDI in

8

+5 V

 

 


Integrated Controllers

The system board has three integrated controllers. Each controller can be disabled if needed using the BIOS Setup program. For more information, see Chapter 2, “ Components”.

SCSI Controller

The system board includes an integrated LSI 53C1010 SCSI controller. The controller provides the system with a dual-channel Ultra3 SCSI bus.

Channel A connects to an external SCSI port and (on some systems) to internal SCSI devices. Channel B connects (on some systems) to internal SCSI devices. Both channels use 68-pin SCSI connectors located on the system board.


Warning: For continued protection against fire and energy hazards, do not connect an external SCSI port to SCSI Channel B. Connect an external SCSI port only to SCSI Channel A.

Controller features include:

  • Low-Voltage Differential (LVD) bus

  • 2 16-bit 80 MHz channels

  • 160 MB/sec transfer rate per channel for Ultra3 devices

  • Ultra2 and Ultra3 devices connected to the controller operate at their respective transfer rates

  • PCI bus interface

  • Advanced Configuration and Power Interface (ACPI) support

You may need to use the SCSI Configuration Utility to configure the operation of SCSI peripherals connected to the controller. This utility lets you configure SCSI controllers, perform a low-level format on a SCSI hard disk drive, select boot order, and verify media. To run the SCSI Configuration Utility, press ctrl+c when prompted during system boot. See SCSI Configuration Utility Help for more information on using the utility.

Network Controller

The system board includes an integrated Intel 82559 10/100 Mb/sec Fast Ethernet controller. The controller provides support for the Advanced Configuration and Power Interface (ACPI), Wake-on-LAN, System Management Bus, and Wired for Management compliance.


Note: The Zx10 system board supports Wake-On-LAN through a PCI 2.2-compliant power-management event (PME) on the PCI bus. The system board does not support expansion cards that require a Wake-On-LAN header for wake events.

The controller's Ethernet port is located on the input/output (I/O) panel.

Controller features include:

  • IEEE 802.3 10BASE-T and 100BASE-TX compatibility

  • Full-duplex support at both speeds

  • 3 Kb Transmit and Receive FIFO

  • IEEE 802.3x 100BASE-TX flow control support

  • PCI bus interface

  • RJ45 Ethernet port

Audio Controller

The system board includes a Creative Technologies ES1373 AudioPCI controller. The controller provides support for the Advanced Configuration and Power Interface (ACPI), DirectSound, DirectSound 3D, MIDI, Sound Blaster, Roland MPU401, and Audio Codec '97 (AC97).

The controller's jacks and its MIDI/game port are located on the input/output (I/O) panel. The ATAPI connectors are located on the system board adjacent to the I/O panel ports.

Controller features include:

  • 64 voices and 128 general MIDI wavetable instruments

  • 8-bit and 16-bit, mono and stereo recording and playback

  • Sampling rates up to 48 kHz

  • 16 MIDI channels

  • Full-duplex operation

  • Line in, line out, and microphone in jacks

  • MIDI/game port

  • ATAPI connectors for CD-ROM input, video input, and monaural audio (telephony) input

  • PCI bus interface

Hardware Monitoring and Power Management

The system board features advanced hardware monitoring capabilities. These features help save energy, prolong system life, and provide for functionality such as remote system wakeup.

When used with the hardware monitoring software on a system, these features enable you to monitor:

  • Major system voltages, including +1.5 V, +2.5 V, +3.3 V, +3.3 V standby, +5 V, +5 V standby, -5 V, +12 V, -12 V, processor (CPU) cores, and AGP input/output (I/O)

  • Temperature of processor (CPU) cores, and ambient temperature near the processors and in the chassis

  • Presence and location of fans – front (Fan 1 and Fan 2) and rear (Fan 3 and Fan 4); presence varies by system

  • Chassis intrusion

The system board includes integrated temperature sensors. These sensors provide signals for reporting temperature readout data and for controlling cooling fan speed.

The Power LED on the front of the system base unit indicates the system's normal power states:

Table 2-12. Base Unit Power LED

LED

Power State

Explanation

Unlit

Off

Auxiliary power is off (fans are not running) or there is a system failure (fans are running)

Amber

Auxiliary

Auxiliary power is on; power consumption is reduced

Blinking

Green

Managed

Power

The system is in an ACPI-compliant power conservation state managed by the operating system; power consumption is reduced

Steady

Green

Full

Full power is on; power conservation is per device

The Power/Status LED on the system board indicates the system's operational status:

Table 2-13. System Board Power/Status LED

LED

Status

Unlit

Auxiliary power is off (fans are not running)

Bright

System failure (fans are running)

Amber

Auxiliary power is on

Green

Full power is on

Figure 2-24. System Board Power/Status LED

System Board Power/Status LED

CMOS/Clock Lithium Battery

The CMOS/clock lithium battery is located at the bottom of the system board, next to the lowest expansion sockets. The battery may be hidden under installed expansion cards.

Figure 2-25. CMOS/Clock Lithium Battery

CMOS/Clock Lithium Battery

Battery replacement is not normally required. The battery has a life expectancy of 10 years with no line power applied to the system. When line power is present, there is no drain on the battery.

If you must remove the battery, the system loses its operating parameters stored in CMOS memory. As a result, the system BIOS parameter settings are lost. After you install a new battery, you must reset the date and time and reconfigure the BIOS parameter settings. See Chapter 3, "BIOS Setup," for more information on configuring BIOS parameter settings.


Warning: Turn off the system and disconnect it from AC power before changing the battery. Damage to components can occur if the battery is shorted while AC power is applied.

To remove the battery, push out the clip on the side of the battery holder to release the battery. Ensure that the new battery is properly oriented before installing it (positive side facing up). Replace the battery only with the same or equivalent type as recommended by the manufacturer. Dispose of used batteries according to the manufacturer's instructions.