
2.4 66/100MHz System Configuration
The jumper 2 (JP2) allows you to set FSB (Front Side Bus) to be 66 or 100MHz configuration.
When you set FSB to 66MHz, you can select the system bus frequency from 66MHz to 83.
3MHz through CPU Host Clock (CPU/PCI) of Chipset Features Setup in BIOS Setup (Please
refer to page 26). When you set FSB to 100MHz, you can select the system bus frequency
from 100MHz to 150MHz through CPU Host Clock (CPU/PCI) of Chipset Features Setup
in BIOS Setup (Please refer to page 26).
NOTE: Because Celeron socket 370 CPU now can support 66MHz FSB only, we strongly
recommend that you set JP2 as 66MHz. Otherwise it may cause system damaged. If
Intel releases new version Celeron CPU to support 100MHz FSB, then you can set JP2
as 100MHz to increase system performance.
HARDWARE INSTALLATION 6
2.5 CPU Internal Frequency Ratio Setting
The switch 1 (SW1) is designated for adjusting the CPU internal frequency ratio. The fre-
quency ratio is defined as the table shown below. The internal frequency can be calculated
by the following formula:
CPU internal frequency = frequency ratio x system bus frequency *
* System bus frequency is set in CPU Host Clock (CPU/PCI) of Chipset Features Setup in
BIOS Setup (Please refer to page 26).
NOTE: Because Intel has locked the Socket 370 Celeron CPUs frequency ratio, setting
SW1 to adjust the frequency ratio is useless. Howerer, it may be effective if Intel un-
locks the frequency ratio in the future.
Transcend
DIMM1(64/72bit168pin SDRAM Module)
DIMM2(64/72bit168pin SDRAM Module)
DIMM2(64/72bit168pin SDRAM Module)
COM1
Printer
ParallelPort
AGP
PCISlot1(PCI1)
PCISlot4(PCI4)
PCISlot2(PCI2)
PCISlot3(PCI3)
ISASlot1(ISA1)
ISASlot2(ISA2)
Intel443ZXAGP Set
IntelPIIX4ChipSet
CR20323VLithiumCell
PrimaryIDEConnector
SecondIDEConnector
FloppyConnector
2MbitFlash(BIOS)
Multi-I/O&KeyboardController
FrequencyDIPSwitch
PANEL
PanelSwitch
IDE1IDE2
CASE-FAN
CPU-FAN
FDC
PCI1
PCI2
PCI3
PCI4
ISA1
ISA2
IrDA
InfraredPort
WOL
WakeOnLAN
AGP
COMA
CMOS_CLR
HardwareMonitor
TS-ABX31/TS-AZX31 66/100M
PS/2
T:MouseB:Keyboard
USB
T:Port 1B:Port2
COM2
ATXPowerConnector
POWER-FANPWR-CONN
KB MOUSE
USB
COMB
KB-AWK
JP2 1
1
66MHz
100MHz
166/100MHz
z FSB Configuration Jumper