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P8SC8/P8SCi User's Manual
Serial Ports
Two serial ports are included on
the motherboard: COM1 is a port
located beside the mouse/key-
board ports and COM2 is a header
located below the Floppy Drive.
See the table on the right for pin
definitions.
*NC indicates no connection.
Speaker Connector
The speaker connector is located
on J9 and allows you to choose
between using the internal or an
external speaker. For the internal
speaker, short Pins 3 and 4. To
use an external speaker, place the
speaker cable header on the
speaker connector. See the table
on the right for pin definitions.
Fucntion Pin Definition
Speaker: Pin Definition
Pins 1- 4
Pins 3, 4
External Speaker
Internal Speaker
Serial Port Pin Definitions
(COM1)
Pin Number Definition
1 CD
2 RD
3 TD
4 DTR
5 Ground
Pin Number Definition
6 DSR
7 RTS
8 CTS
9 RI
Serial Port Pin Definitions
(COM2)
Pin Number Definition
1 CD
2 RD
3 TD
4 DTR
5 Ground
Pin Number Definition
6 DSR
7 RTS
8 CTS
9 RI
10 NC
KB/MS
USB0/1
COM1
VGA
Parallel Port
JPUSB1
ATX-24 Pin PWR
JPF
JPW
AKE1
4-Pin
PWR
CPU
CopperRiver
NorthBridge
GLAN1
GLAN2
DIMM 1A
DIMM 1B
DIMM 2A
DIMM 2B
GLAN
CTRL
GLAN
CTRL
JPL1
JPL2
PCI-X 133/100 MHz
PCI-Ex1
(L
G
A
7
7
5
)
SCSI CTRL
7902 W
SCSI Channel A
SCSI Channel B
J
W
D
U
S
B
6
/7
B
IO
S
J
L
1
IDE
Floppy
J
5
J
B
T
1
J
F
1
JL
E
D
F
a
n
3
F
a
n
2
J
S
L
E
D
Fan1
Fan5
Fan4
IC
H
6
R
S
o
u
th
B
rid
g
e
PXH-V
PCI 33MHz
B
a
tte
ry
PCI-Ex1
S
A
T
A
3
S
A
T
A
2
S
A
T
A
1
S
A
T
A
0
J
W
O
R
J
P
A
1
IPMI
COM2
U
S
B
2
/3
B
u
z
z
e
r
W
O
L
JBT1
J
9
JS
L
E
D
LE1
E7221
COM2
COM1
Speaker