17
COM1/COM2 RS232/Power Select
JP8
JP4
JP8 (for COM 1) and JP4 (for COM 2) are used to configure Serial COM ports to pure RS232
or RS232 with power. The pin functions of COM 1 and COM 2 will vary according to JP8’s and
JP4’s setting respectively.
COM 1
COM 2
10
2
1
9
Pin
RS232
with power
1
+12V
2
RXD
3
TXD
4
DTR-
5
GND
6
DSR-
7
RTS-
8
CTS-
9
+5V
JP8 (COM 1)
1-3 (RI-), 2-4 (DCD-) On:
RS232 (default)
3-5 (+5V), 4-6 (+12V) On:
RS232 with power
JP4 (COM 2)
2
4 6
1 3
5
2
4 6
1 3
5
2
4
6
1
3
5
1
3
5
2
4
6
1-3 (RI-), 2-4 (DCD-) On:
RS232 (default)
3-5 (+5V), 4-6 (+12V) On:
RS232 with power
USB Power Select
2-3 On: 5V
1
3
2
1-2 On: 5VDU
1
3
The power of the USB connectors’ voltage buses can be configured to either 5VDU or 5V. The
jumpers are located as illustrated above and correspond to each USB port number as listed
below.
2
JP number
USB Port
JP13
USB 1/2 (USB 3.0)
JP14
USB 3/4 (USB 3.0)
JP15
USB 7/8 (USB 2.0)
JP16
USB 9/10 (USB 2.0)
JP17
USB 13/14 (USB 2.0)
JP18
USB 5/6 (USB 3.0)
JP19
USB 5/6 (USB 2.0)
JP14
JP18
JP19
JP13
JP17, JP15, JP16
(from left to right)
