ASRock 890GM Pro3 User Manual - Page 28
Serial port Header, This COM1 header supports a, serial port module.
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Serial port Header (9-pin COM1) (see p.11 No.26) RRXD1 DDTR#1 DDSR#1 CCTS#1 1 RRI#1 RRTS#1 GND TTXD1 DDCD#1 This COM1 header supports a serial port module. 28
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Serial port Header
This COM1 header supports a
(9-pin COM1)
serial port module.
(see p.11
No.26)
CC
T
S
#1
DDSR
#1
DD
T
R
#1
RR
X
D
1
DDCD
#1
TTX
D
1
G
N
D
RR
T
S
#1
RR
I#1
1