
B598
5
JUMPER & CONNECTOR SETTING
Connector Setting
JBAT - CMOS RAM operation mode
Shorted
Function
Remark
1-2
Normal operating
Default setting
2-3
Clear CMOS RAM
Removed VCC5VSB
J1 - External speaker for PC-BEEP
Pin
Function
Remark
1-2
On board beeper
Default
Remove short-cap
insert speaker connector
External speaker
JCD1 - Audio CD output connector
Pin
Function
Remark
1
Channel Right
2
CD Ground
3
Channel Left
4
CD Ground
JCOM2 - COM2
UART2 is shared by COM2, MIDI and SIR. To select COM2 item in
BIOS set-up menu while system boot-up
Pin
Signal name
Pin
Signal name
1
DCD
2
RXD
3
TXD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
RI
10
NC