User`s manual
Table Of Contents
- Preface
- Chapter 1
- Introducing the Mainboard
- Chapter 2
- Installing the Mainboard
- Safety Precautions
- Quick Guide
- Installing the Mainboard in a Case
- Checking Jumper Settings
- Connecting Case Components
- Installing Hardware
- Installing the Processor
- Installing Memory Modules
- Installing a Hard Disk Drive/CD-ROM
- Installing a Floppy Diskette Drive
- Installing Add-on Cards
- Connecting Optional Devices
- Connecting I/O Devices
- Chapter 3
- Using BIOS
- About the Setup Utility
- Using BIOS
- Standard CMOS Features
- Advanced BIOS Setup Option
- Anti-Virus Protection (Disabled)
- Y2K Monitor (Disabled)
- CPU Internal Cache CPU Internal Cache (Enabled)
- External Cache (Enabled)
- CPU L2 Cache ECC Checking (Enabled)
- Quick Power On Self Test (Enabled)
- 1st/2nd/3rd Boot Device (Floppy/HDD-0/LS120)
- Boot Other Device (Enabled)
- Swap Floppy Drive (Disabled)
- Boot Up Floppy Seek (Enabled)
- Boot Up NumLock Status (On)
- ATA 66/100 IDE Cable MSG (Enabled)
- Gate A20 Option (Fast)
- Typematic Rate Setting (Disabled)
- Security Option (Setup)
- OS Select For DRAM > 64 MB (Non-OS2)
- HDD S.M.A.R.T Capability (Disabled)
- Report No FDD For WIN95 (Yes)
- Advanced Chipset Features Option
- Integrated Peripherals Option
- OnChip IDE Device
- OnChip PCI Device
- SuperIO Device
- POWER ON Function (Hot KEY)
- KB Power ON Password
- Hot Key Power ON (Ctrl-F12)
- Onboard FDC Controller (Enabled)
- Onboard Serial Port 1 (3F8/IRQ4)
- Onboard Serial Port 2 (2F8/IRQ3)
- UART Mode Select (Normal)
- UR2 Duplex Mode (Half)
- Onboard Parallel Port (378/IRQ7)
- Parallel Port Mode (ECP)
- ECP Mode Use DMA (3)
- Game Port Address (201)
- Midi Port Address (330)
- Midi Port IRQ (10)
- Init Display First (PCI Slot)
- OnChip USB Controller (All Enabled)
- USB Keyboard Support (Disabled)
- IDE HDD Block Mode (Enabled)
- Power Management Setup Option
- Power Management Timeouts
- Wake Up Calls
- ACPI Function (Enabled)
- ACPI Suspend Type (S1 (POS))
- Power Management Option (User Define)
- HDD Power Down (Disable)
- Suspend Mode (Disable)
- Video Off Option (Suspend --> Off)
- Video Off Method (DPMS Support)
- MODEM Use IRQ (3)
- Soft-Off by PWRBTN (Instant-Off)
- AC Resume Function (Always Off)
- IRQ/Event Activity Detect
- Press
to return to the previous screen. - PNP/PCI Configuration Option
- PC Health Status Option
- Frequency/Voltage Control
- Load Fail-Safe Defaults Option
- Load Optimized Defaults Option
- Set Password Option
- Save & Exit Setup Option
- Exit Without Saving
- Chapter 4
- Using the Mainboard Software

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Processor The KOB KT266A FSX mainboard uses an AMD 462-pin
Socket A that has the following features:
• Supports 100/133 MHz frontside bus (FSB)
• Accommodates AMD Athlon/Duron processors
Chipset The VIA KT266A Northbridge and Southbridge chipsets are
based on an innovative and scaleable architecture with proven
reliability and performance. A few of the chipset’s advanced
features are:
• An advanced V-Link memory controller architecture that
provides the bandwidth and performance necessary for
even the most demanding Internet and 3D graphics
• A low 2.5-volt DDR266 SDRAM power consumption
which makes it an excellent solution for notebooks and
desktops with a small footprint
• Support for a 4xAGP interface providing vivid 3D graphics
and video performance
• An ATA 100 interface on the chipset, which helps boost
system performance by providing a high-speed connec-
tion to ATA 100 Hard Disk Drives, delivering maximum
sustained data transfer rates of 100 MB/sec
Additional key features include support for six USB ports, an
AC 97 link for audio and modem, hardware monitoring, and
ACPI/OnNow power management.
Memory The mainboard accommodates DDR200/266 or
PC1600/PC2100 DDR SDRAM (Double Data Rate Synchro-
nous DRAM) up to 3 GB using three 2.5V unbuffered DIMM
modules.
VGA The KOB KT266A FSX includes a 4xAGP slot that provides
four times the bandwidth of the original AGP specification.
AGP technology provides a direct connection between the
graphics sub-system and the processor so that the graphics do
not have to compete for processor time with other devices on
the PCI bus.
AC’ 97 Audio
Codec
The AC’ 97 Audio codec is compliant with the AC’ 97 2.1
specification, and supports 18-bit ADC (Analog Digital Con-
verter) and DAC (Digital Analog Converter) resolution as well
as 18-bit stereo full-duplex codec with independent and vari-
able sampling rates. Further features include support for four
analog line-level stereo inputs.
Expansion
Options
The mainboard comes with the following expansion options:
• Five 32-bit PCI slots
• An 4xAGP slot
• A Communications Network Riser (CNR) slot
• Two IDE channels and a floppy disk drive interface
The KOB KT266A FSX supports Ultra DMA bus mastering with
transfer rates of 33/66/100 MB/sec.
Integrated I/O The mainboard has a full set of I/O ports and connectors:
• Two PS/2 ports for mouse and keyboard
• Two serial ports
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