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10. Support 2nd USB Port
This motherboard provides 4
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 other USB connectors to the back panel or front panel of
chassis.
Pin 1
1
+5V
+5V
SBD2-
SBD3-
SBD2+
SBD3+
GND
GND
KEY
NC
USB2 Connector
11. Front Audio Connector
If the housing has been designed with an audio port on the front panel, you'll be able to
connect onboard audio to front panel through this connector. By the way, please remove
the jumper cap from the Front Audio Connector before you connect the cable. Do not
remove this yellow jumper cap if housing without an audio port on the front panel.
Pin 1
1
2
GND
FP_MIC
+5V
NC
JS1
PHONE_R
KEY
NC
NC
PHONE_L
9 10
12. Connecting CD / MODEM / AUX
MODEM-CN
CD-IN
AUX-IN
13. Installing Windows 95
1.
First, don't install any add-on card except AGP card.
2.
Install Windows 95 OSR2 v2.1, 1212 or 1214 version and later with USB
support. Otherwise, you need to install USBSUPP.EXE.
3.
Install the VIA 4 in 1 driver, which includes VIA AGP Vxd driver, IRQ routing
driver, and VIA chipset function registry program.
4.
Finally, Install other add-on cards and their drivers.
14. Installing Windows 98
1.
First, don't install any add-on card except AGP card.
2.
Enable USB Controller in BIOS Setup > Integrated Peripherals > OnChip USB,
to make BIOS fully capable of controlling IRQ assignment.
3.
Install Window 98 into your system.
4.
Install the VIA 4 in 1 driver, which includes VIA AGP Vxd driver, IRQ routing
driver, and VIA chipset function registry program.
5.
Finally, Install other add-on cards and their drivers.
15. Installing Windows NT
It is not necessary to install VIA 4 in 1 driver, just follow the installation guide of NT and your
add-on cards
The CD-IN connector is used to connect CD Audio
cable from CDROM or DVD drive to onboard sound.
The MODEM-CN connector is used to connect
Mono In/ Mic Out cable from internal modem card to
onboard sound circuit.
The AUX-IN connector is used to connect MPEG
Audio cable from MPEG card to onboard sound.
Connector
Pin1
Pin2
Pin3
CD-IN
Left
GND
GND
MODEM-CN
Mono In GND
GND Mic Out
AUX-IN
Left
GND
GND
Pin4
Right
Right
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