Pin 1
7. Support 2
nd
USB Port
6. Support 10/100 Mbps LAN onboard
8. Connecting IDE and Floppy Cables
9. Connecting Front Panel Cable
This motherboard provides four
USB
connectors to connect USB devices, such as mouse,
keyboard, modem, printer, etc. There are two connectors on the PC99 back panel. You
can use proper cable to connect the other USB connector to the back panel or front panel
of chassis.
Connect 34-pin floppy cable and 40-pin IDE cable to floppy connector FDC and IDE
connector. Be careful of the pin1 orientation. Wrong orientation may cause system
damage.
Pin 1
ATA 33/66/100
IDE Connector
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 2-pin female connector from the
housing front panel. Plug this connector to the soft-power switch connector marked
SPWR
.
FDD Connector
IDE 1 (Primary)
IDE 2 (Secondary)
Pin 1
Master (3rd)
Slave (2nd)
Master (1st)
Slave (4th)
Green (ACT)
Yellow (Speed)
Intel 815E B-Step/815EP B-Step (Solano Series) includes a fast Ethernet controller on
chip. On the strength of Intel 82562ET/EM PHY on board, which is a highly-integrated
Platform LAN Connect device, it provides 10/100M bps Ethernet for office and home use,
the Ethernet RJ45 connector is located on top of USB connectors. The green LED
indicate the link mode, it lights when linking to network; and the yellow LED indicates the
transfer mode, it lights when transferring data in 100Mbps mode.
1
Power
Switch
ACPI &
Power LED
RESET
SPEAKER
IDE LED
1
NC
NC
GND
RESET
GND
SPEAKER
NC
GND
+5V
+5V
ACPILED
GND
ACPILED-
GND
SPWR
NC
NC
+5V
LED
LED
+5V
SBD3-
SBD3+
GND
NC
+5V
SBD2-
SBD2+
GND
KEY
USB2 Connector
1
