IEI Technology ACT-412A-N270, User Manual

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ACT-412A-N270 User Manual
Page 34
Figure 2-6: Clear CMOS Jumper
2.10.4 COM Port Pin 9 Select
Jumper Label:
JP8
and
JP10
Jumper Settings: See
Table 2-4
Jumper Location:
See
Figure 2-7
Two jumpers (JP8 and JP10) configure pin 9 on COM1 and COM3 DB-9 connectors. Pin 9
on the COM1 and the COM3 DB-9 connectors can be set as the ring (RI) signal, +5 V or
+12 V. The COM1 and COM3 Pin 9 Setting jumper selection options are shown in
Table
2-4
and
Table 4-5
.
JP8 Description
Short 1-3 COM1 RI Pin use +12 V
Short 5-7 COM1 RI Pin use +5 V
Short 7-9 COM1 RI Pin use RI Default
Table 2-4: COM1 Pin 9 Setting Jumper Settings