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.
Connector
Pin1
Pin2
Pin3
Pin4
CD-IN
Left
GND
GND
Right
MODEM-CN
Mono In GND
GND Mic Out
AUX-IN
Left
GND
GND
Right
The IrDA connector can be configured to support wireless infrared module, with this module and
application software such as Laplink or Windows 95 Direct Cable Connection, the user can
transfer files to or from laptops, notebooks, PDA devices and printers. This connector supports
HPSIR (115.2Kbps, 2 meters) and ASK-IR (56Kbps).
Install the infrared module onto the
IrDA
connector and enable the infrared function from BIOS
Setup, UART Mode, make sure to have the correct orientation when you plug in the IrDA
connector.
Pin 1
12. Connecting CD / MODEM / AUX
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.
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.
FP_MIC
MICVREF
PHONE_R
NC
PHONE_L
GND
+5V
NC
KEY
NC
1 2
9 10
13. IrDA Connector
10. Support 2nd USB Port
+5V
SBD3-
SBD3+
GND
NC
+5V
SBD2-
SBD2+
GND
KEY
USB2 Connector
1
Pin 1
IrDA Connector
Pin 1
1
KEY
GND
IR_RX
NC
+5V
IR_TX
IrDA Connector
AUX-IN
MODEM-CN
CD-IN
