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5

Chapter 1 INTRODUCTION

Extended Features:

Advanced Configuration and Power Interface
(ACPI) ready
CPU Temperature detect 

Support System Power Monitor

Support   Win95   Soft   Power   Off   (For   ATX
Power only)

Support SM-Bus

Dimension:

305 mm x 195 mm

Form Factor:

ATX Form Factor

EP-KL21 User’s Manual

Summary of Contents for EP-KL21

Page 1: ...EP KL21 Motherboard of Pentium II with MMX User s Manual Order Number 41010005 December 1997 ...

Page 2: ...ATION REGARDING THE ELECTROMAGNETIC COMPATIBILITY AND SAFETY THE FOLLOWING STANDARDS WERE APPLIED EN50081 1 1992 GENERIC EMISSION STANDARDS EN550022 1994 EMISSION EN60555 2 1987 HARMONICS EN60555 3 1987 VOLTAGE FLUCTUATIONS EN50082 1 1992 GENERIC IMMUNITY STANDARD IEC 801 2 1984 ELECTROSTATIC DISCHARGE IMMUNITY IEC 801 3 1984 RADIATED IMMUNITY IEC 801 4 1988 ELECTRICAL FAST TRANSIENT The manufactu...

Page 3: ... Project Leader President ...

Page 4: ...EP KL21 Motherboard for Compatible PC User Manual Rev 1 1 Related Motherboard EP KL21 P C B Rev 1 X Date Dec 1997 EP KL21 User s Manual i ...

Page 5: ...klist 2 1 3 Specifications 3 Chapter 2 6 2 1 Motherboard Description 6 2 2 Motherboard Layout 7 2 3 System Memories 8 2 4 Central Processing Unit CPU 10 2 5 Expansion Cards Slots 12 2 6 External Connectors 13 2 7 Hardware Jumper Switch Setup 25 EP KL21 User s Manual ii ...

Page 6: ...radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Re orient or relocate the receiving antenna I...

Page 7: ...partment of Communications Statement This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out the Radio Interference Regulations for the Canadian Department of Communications EP KL21 User s Manual iv ...

Page 8: ...ented in the following two chapters Chapter 1 Introduction Presents what you should receive with your motherboard the features and specifications of the product This chapter enclosed with a diagram showing the layout of the motherboard Chapter 2 Installation Motherboard Installation includes detailed information on how to install and configure the motherboard EP KL21 User s Manual ...

Page 9: ...pin Floppy Disk Drive Flat Cable x 1 User s Manual x 1 Bus Master IDE Drivers Diskette x 1 Option Rear Panel Shielding Option IrDA Module x 1 Option LDCM Diskette x 1 Option Note Option Components will be included upon customer ordering instructions per Proforma Invoice additional external procurement cost will be included EP KL21 User s Manual 2 ...

Page 10: ...ort PnP PCI 2 1 CD ROM ATAPI LS 120 and any IDE Device Bootable Virus Protection DMI Ready System Memory 3 x 168 pin DIMM Slots Support Mixed Memory Technologies Extended Data Output EDO Fast Page FP DRAM Synchronous DRAM SDRAM Multi I O Onboard 1 x FDD Port support up to 2 88MB 1 x Parallel Port LPT support ECP EPP 2 x High Speed Serial 16C550 UART Ports 2 x Universal Serial Bus USB Ports 1 x PS ...

Page 11: ... PS 2 Mouse Port 1 x Parallel Port 2 x Com Port Expansion Slots 3 x 16 bit ISA Slots with 100 ISA Compatible Functions 4 x 32 bit PCI Slots supporting PCI BUS Master Slots Conform with PCI Specifications Version 2 1 1 x AGP Slot supported Options 2 x Infrared IrDA Wireless Interface Kit Front Rear Universal Serial Bus USB Connector Kit LM78 Hardware Monitor Circuit Design and LM75 CPU Temperature ...

Page 12: ...Advanced Configuration and Power Interface ACPI ready CPU Temperature detect Support System Power Monitor Support Win95 Soft Power Off For ATX Power only Support SM Bus Dimension 305 mm x 195 mm Form Factor ATX Form Factor EP KL21 User s Manual ...

Page 13: ...ing CPU or even plugging PCI card into associated slots to avoid damaging any circuits or sockets on board A cooling fan is strongly recommended The motherboard supports minimum of 8MB of system memory and a maximum of 512MB SDRAM 1GB EDO RAM The motherboard supports standard Fast Page FP EDO Extended Data Output or SDRAM Synchronous DRAM The motherboard provides three 168 pin DIMM The socket supp...

Page 14: ...7 Chapter 2 INSTALLATION 2 2 Motherboard Layout EP KL21 User s Manual ...

Page 15: ...NSTALLATION 2 3 System Memories This motherboard supports three 168 pin DIMM The SDRAM can be either 60ns Install memory in any or all of the banks in any combination as the following page EP KL21 User s Manual 8 ...

Page 16: ...9 Chapter 2 INSTALLATION Item Bank Memory Module 1 DIMM 1 8 256MB 2 DIMM 1 2 8 256MB 3 DIMM 1 2 3 8 256MB EP KL21 User s Manual DIMM 2 DIMM3 DIMM 1 ...

Page 17: ...r Pentium II CPU The CPU should have a fan attached to it to prevent overheating If your CPU did not come with a fan then purchase a fan before you turn on your system NOTE Without a fan the CPU can overheat and cause damage to both the CPU and the motherboard EP KL21 User s Manual SLOT 1 10 ...

Page 18: ...LLATION To install a CPU locate the SLOT 1 Insert the CPU with the correct orientation you should have a CPU fan that will cover the face of the CPU EP KL21 User s Manual SW1 Use dip sw or pin header CPU Bus Clock Select ...

Page 19: ...the same way as the IRQ assignment process You can select a DMA channel in the PCI and PnP configuration section of the BIOS Setup utility NOTE Choose Legacy ISA for those IRQ s and DMA s you wish to reserve for Legacy Non PnP ISA expansion cards in IRQ xx Used by ISA and DMA x Used By ISA of the PnP and PCI Setup in the BIOS Software section otherwise conflicts may occur EP KL21 User s Manual 4 x...

Page 20: ...ill not allow standard AT size large DIN keyboard plugs You may use a DIN to mini DIN adapter on standard AT keyboard 2 PS 2 Mouse Connector J7 6 pin Female The system will direct IRQ12 to the PS 2 mouse if one is detected If not detected expansion cards can use IRQ12 3 Parallel Port J9 25 pin Female EP KL21 User s Manual J12 PS 2 Keyboard Connector J7 PS 2 Mouse Connector J8 USB Port Support Stan...

Page 21: ...Setup on Onboard Parallel Port 4 Serial Ports J10 COM1 J11 COM2 9 pin Male The two serial COM1 COM2 ports can be used for pointing devices or other serial devices See Onboard Serial Port in Chipset Features Setup of the BIOS Software EP KL21 User s Manual J9 Parallel Port 1 J11 Com2 J10 Com1 14 ...

Page 22: ...because of the different hole sizes Find the proper orientation and pushed down firmly making sure that it is locked in place NOTE To prevent electrical spikes make sure that the power supply is not connected to an outlet when making or removing connections Power supplies contain power reserves which can damage electrical components EP KL21 User s Manual PS1 ATX Power Connector ...

Page 23: ...nector J2 34 pin block This connector supports the provided floppy disk drive ribbon cable After connecting the single end to the board connect the plugs on the other end to one or two floppy drives EP KL21 User s Manual 1 J2 FDD Connector 16 ...

Page 24: ...After connecting the single end to the board connect the two plugs at the other end to your hard disk s If you install two hard disks you must configure the second drive to Slave mode by setting its jumper accordingly Please refer to the documentation of your hard disk for the jumper settings EP KL21 User s Manual 1 1 J3 Secondary HDD J4 Primary HDD ...

Page 25: ...apter 2 INSTALLATION 8 a IDE Activity LED J1 Pin 17 19 This connector connects to the IDE hard disk activity indicator light on the system cabinet EP KL21 User s Manual 1 J1 Pin 17 19 IDE Activity LED 18 ...

Page 26: ...power LED when the motherboard has power c Turbo LED J1 Pin 13 15 EP KL21 User s Manual 1 For 3 pin Power LED Connector J1 Pin 8 10 12 System Power LED Pin 8 GND 10 NC 12 VCC If the cabinet provide the turbo LED cable connect the cable to this two pin connector to turn on the LED on the front panel 1 ...

Page 27: ...Chapter 2 INSTALLATION d CMOS Clear J1 Pin 22 24 26 EP KL21 User s Manual 1 1 J1 Pin 22 24 26 Clear CMOS Clear Normal Clear Pin 22 24 Normal Pin 24 26 Default 20 ...

Page 28: ...ower The system power LED shows that status of the system s power This connection does not have a function when a standard power supply is used NOTE If the power to the ATX power supply is interrupted while the motherboard is on standby power will remember that the motherboard should be on and boot the computer when power is reapplied to the ATX power supply EP KL21 User s Manual 1 J1 Pin 9 11 ATX...

Page 29: ...ving to turn off your power switch This is a preferred method of rebooting in order to prolong the life of the system s power supply g Keyboard Lock Switch Lead J1 Pin 2 4 6 This 3 pin connector connects to the case mounted keyboard lock switch for locking the keyboard EP KL21 User s Manual Keylock 1 J1 Pin 2 4 6 KEYLOCK J1 Pin 1 3 Reset Switch Lead 1 22 ...

Page 30: ... 12V or less Orient the fan so that the heat sink fins allow airflow to go across the onboard heat sink s Depending on the fan manufacturer the wiring and plug may be different The red wire should be positive while the black should be ground Connect the fan s plug to the board taking into consideration the polarity of the connector EP KL21 User s Manual GND Fan Detect 1 1 JP8 FAN Connector J1 Pin ...

Page 31: ...connectors support the optional wireless transmitting and receiving infrared module This module mounts to a small opening on system cases that support this feature You must also configure UART 2 Use Infrared in Chipset Features Setup to select whether UART 2 is directed for use with COM2 or IrDA When IrDA is selected in BIOS COM2 will be disabled Use the five pins or six pins as shown and connect ...

Page 32: ...25 Chapter 2 INSTALLATION 2 7 Hardware Jumper Switch Setup 12 External HCLK Frequency Setup Fixed to 66 MHz EP KL21 User s Manual off Default setting SW1 1 4 Fixed to off position SW1 5 6 Fixed to off ...

Page 33: ...ON 13 Frequency Ratio Select Table SW1 CPU SPEED SW 1 1 2 3 4 5 6 233 ON OFF OFF ON OFF OFF 266 OFF ON ON ON OFF OFF 300 OFF ON OFF ON OFF OFF 333 OFF OFF ON ON OFF OFF NOTE The CPU Speed is in MHz EP KL21 User s Manual 26 ...

Page 34: ...100 POST CONSUMER RECYCLED PAPER EP KL21 User s Manual ...

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