Com1/Com2 Rs232/Power Select - DFI SD631-C236 User Manual

COM1/COM2 RS232/Power Select

JP8
COM 1
COM 2
10
2
9
1
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.
JP8 (COM 1)
6 5
4 3
2 1
1-3 (RI-), 2-4 (DCD-) On:
RS232 (default)
JP4 (COM 2)
2 4 6
1 3 5
1-3 (RI-), 2-4 (DCD-) On:
RS232 (default)
RS232
Pin
with power
1 +12V
2
RXD
TXD
3
DTR-
4
5 GND
DSR-
6
RTS-
7
CTS-
8
+5V
9
6 5
3
4
2
1
3-5 (+5V), 4-6 (+12V) On:
RS232 with power
2 4 6
1 3 5
3-5 (+5V), 4-6 (+12V) On:
RS232 with power
17
USB Power Select
JP19
JP14
1
2
3
1-2 On: 5VDU
JP13
1
2
3
2-3 On: 5V
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.
JP number
JP13
JP14
JP15
JP16
JP17
JP18
JP19
JP18
JP17, JP15, JP16
(from left to right)
USB Port
USB 1/2 (USB 3.0)
USB 3/4 (USB 3.0)
USB 7/8 (USB 2.0)
USB 9/10 (USB 2.0)
USB 13/14 (USB 2.0)
USB 5/6 (USB 3.0)
USB 5/6 (USB 2.0)