16
(9) COM3/4 (9-Pin): RS232 Serial Port Header
D
C
D
R
X
D
T
X
D
D
T
R
G
N
D
D
S
R
R
T
S
C
T
S
R
I
Pin1
Pin6
(10)
DUAL_RS485 (4-pin): RS485 Header
Pin1
T
D
3-
T
D
4-
T
D
3+
T
D
4+
2
DUAL_RS485
header serves as COM3/4 header RS485 function expansion block. For
RS485 function, user needs to go to BIOS
→
‘
Serial Port 3 Configuration
’/‘
Serial Port
4 Configuration
’ to set ‘
Device Mode
’ as [
RS485
], also go to set Jumper COM3_SEL
or COM4_SEL as [
RS485
] mode before connecting compatible cable to corresponding
Pin1-2 (
COM3 RS485
) or Pin 3-4 (
COM4 RS485
).
COM3
COM4
DUAL_RS485
