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Intel X48 Series User's Manual
3.8 Serial Port Header
3.9 1394a Connector header
PWR_BT
RST_BT
LED1
PCIE5
JLAN
JLAN1
JBIO
SL
C
SATA1
USB
SATA2
SATA3
PS/2 Keyboard
USB
CMOS_BT
SPDIF_IN
1394
DUAL
eSATA
SPDIF_OUT
LAN
USB
LAN
USB
AUDIO_1
SAFE_BIOS
USER_BIO
S
SF
AN3
SF
AN5
SF
AN4
JUSB
J1394
1
3
1
3
1
1
3
3
3
1
PWR_BT
RST_BT
LED1
PCIE5
JLAN
JLAN1
JBIO
SL
C
SATA1
USB
SATA2
SATA3
PS/2 Keyboard
USB
CMOS_BT
SPDIF_IN
1394
DUAL
eSATA
SPDIF_OUT
LAN
USB
LAN
USB
AUDIO_1
SAFE_BIOS
USER_BIO
S
SF
AN3
SF
AN5
SF
AN4
JUSB
J1394
1
3
1
3
1
1
3
3
3
1
9
Pin
Pin Assignment
Pin
Pin Assignment
1
DCD
2
RXD
3
TXD
4
DTR
5
GND
6
DSR
7
CTS
8
RTS
9
RI
This JCOM1 header supports a serial port module.
The header conforms to IEEE 1394a specification. The IEEE 1394a header can provide
one IEEE1394a port via an optional IEEE 1394a bracket. For purchasing the optional IEEE
1394a bracket,please contact the local dealer.
• Do not plug the IEEE 1394 bracket (2x5-pin) cable into the USB heade.