ASRock 890GM Pro3 R2.0 User Manual - Page 29
Serial port Header
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IEEE 1394 Header (9-pin FRONT_1394) (see p.12 No. 24) Serial port Header (9-pin COM1) (see p.12 No.23) RXTPAM_0 GND RXTPBM_0 +12V GND 1 +12V RXTPBP_0 GND RXTPAP_0 RRXD1 DDTR#1 DDSR#1 CCTS#1 1 RRI#1 RRTS#1 GND TTXD1 DDCD#1 Besides one default IEEE 1394 port on the I/O panel, there is one IEEE 1394 header (FRONT_1394) on this motherboard. This IEEE 1394 header can support one IEEE 1394 port. This COM1 header supports a serial port module. 29
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Serial port Header
This COM1 header supports a
(9-pin COM1)
serial port module.
(see p.12
No.23)
CCTS#1
DDSR#1
DDTR#1
RRXD1
DDCD#1
TTXD1
GND
RRTS#1
RRI#1
1
IEEE 1394 Header
Besides one default IEEE 1394
(9-pin FRONT_1394)
port on the I/O panel, there is one
(see p.12
No. 24)
IEEE 1394 header
(FRONT_1394) on this
motherboard. This IEEE 1394
header can support one IEEE
1394 port.
+12V
G
N
D
+12V
1
R
XTPBM_0
G
N
D
R
XTPAM_0
R
XTPBP_0
G
N
D
R
XTPAP_0