14
*COM1 (9-pin Block): RS232/422/485 Serial Port
COM1 port is optional for NU792C series only.
COM1 port can function as
RS232/422/485 port. In normal settings COM1 functions as RS232 port. With
compatible COM cable they can function as RS422 or RS 485 port.
User also needs to go to BIOS to set
‘
Transmission Mode Select
’
for COM1 (refer to
Page 27) at first, before using specialized cable to connect different pins of this port.
For RS422 Mode
R
S
4
2
2
T
X
-(B
)
R
S
4
2
2
T
X
+
(A
)
R
S
4
2
2
R
X
+
(A
)
R
S
4
2
2
R
X
-(B
)
(B
)
For RS485 Mode
R
S
4
8
5
D
-(B
)
R
S
4
8
5
D
+
(A
)
SATA (7-pin Block): SATAIII Port connector
The board comes with a SATAIII port that supports 6GB/s transfer rate.
NU792 series
support 5V SATA HDD only
.
Pin No.
Definition
1
GND
2
TXP
3
TXN
4
GND
5
RXN
6
RXP
7
GND
SATA
