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6. JP23 FSB/PCI Clock Ratio
This jumper is used to specify the relationship of PCI and FSB clock. Generally speaking, if you are
not overclockers, we recommend you to set at the default setting. By the way, this motherboard
also provides "1MHz Stepping Adjustment" feature for overclockers. You can adjust CPU FSB
frequency via BIOS setup program. Based on the CPU type, the adjustment range has three level:
66~83.3 (FSB=66MHz, such as Celeron™ 533), 75~124 (FSB=100, such as Pentium
®
100~248 (FSB=133, such as Pentium
III 800EB) MHz for your choosing. If you fix the CPU FSB
frequency by JP23, the "1MHz Stepping Adjustment" range will be changed and following JP23
setting.
2
1
(Default)
7. Install DIMM Modules
This motherboard has four 168-pin DIMM sockets that allow you to install PC100 or PC133
memory up to 512MB. The AX3S Plus supports non-ECC/ECC and Registered SDRAM.
Warning: High CPU core voltage
may be able to increase CPU
speed for overclocking, but you
may damage the CPU or reduce
the CPU lifecycle.
8
7
FSB=100
FSB=66
FSB=133
Auto
Note: Based
on Intel i815E/i815EP
chipset specification, we recommend you
that using double-side SDRAM modules
with DIMM socket 1 & 2. By the way, do
not insert the single-side DIMM module in
the DIMM socket 4 when DIMM socket 3
is blanking. This will cause the DIMM size
report error.
8. Connecting IDE, Floppy and IDE RAID Cables
Connect 34-pin floppy cable and IDE cable to floppy connector FDC and IDE / IDE RAID
connector (Applied to AX3S Plus and AX3S Plus II only). Be careful of the pin1
orientation. Wrong orientation may cause system damage.
®
III 800E),
IDE RAID 1 (Primary)
IDE RAID 2 (Secondary)
Attach the power LED, Keylock, speaker, and reset switch
connectors to the corresponding pins. If you enable
"Suspend Mode" item in BIOS Setup, the ACPI & Power
LED will keep flashing while the system is in suspend mode.
Locate the power switch cable from your ATX housing. It is
DIMM1
2-pin female connector from the housing front panel. Plug
DIMM2
this connector to the soft-power switch connector marked
DIMM3
DIMM4
SPWR.
Pin 1
Pin 1
IDE RAID Connector
(Applied to AX3S Plus and AX3S
Plus II only)
9. Connecting Front Panel Cable
FDD Connector
IDE 2 (Secondary)
IDE 1 (Primary)
ATA 33/66/100
IDE Connector
1
SPWR
IDE LED
+
ACPI & PWR
+
LED
+
+
Speaker
Reset
1
NC
SPWR
NC
GND
+5V
ACPI & PWR LED
IDE LED
GND
IDE LED
+5V
+5V
NC
+5V
NC
GND
GND
NC
RESET
SPEAKER
GND
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