MMGA Series
CyberResearch
®
Motherboards
90
©Copyright 2009
CyberResearch, Inc.
The COM Port Pin 9 Setting jumpers configure pin 9 on COM 2/COM 3/COM 4 as either a
+5V, +12V power source (see
Section 5.5.3
to setup) or as a ring-in (RI) line. The COM
Port Pin 9 Setting jumpers selection options are shown in
Table 1-33
.
J_COM_F2
Description
Short 1 – 2
COM 2 RI Pin use voltage
Short 2 – 3
COM 2 RI Pin use RI
Default
J_COM_F3
Description
Short 1 – 2
COM 3 RI Pin use voltage
Short 2 – 3
COM 3 RI Pin use RI
Default
J_COM_F4
Description
Short 1 – 2
COM 4 RI Pin use voltage
Short 2 – 3
COM 4 RI Pin use RI
Default
Table 1-33: COM Port Pin 9 Setting Jumper Settings
The COM Port Pin 9 Setting jumper locations are shown in
Figure 1-54
below.
Figure 1-54: COM Port Pin 9 Setting Jumper Locations
