User`s manual

CyberResearch
®
Motherboards MMGA Series
CyberResearch, Inc. 91
25 Business Park Drive P: [phone]; F: [phone]
Branford, CT USA www.cyberresearch.com
5.5.3 COM Port Pin 9 Voltage Setting Jumpers
Jumper Label: J_COM_V2, J_COM_V3 and J_COM_V4
Jumper Type:
3-pin header
Jumper Settings: See Table 1-33
Jumper Location: See Figure 1-54
The COM Port Pin 9 Voltage Setting jumpers configure pin 9 on COM 2/COM 3/COM 4 as
either a +5V or +12V power source. The COM Port Pin 9 Voltage Setting jumpers
selection options are shown in Table 1-33.
J_COM_V2 Description
Short 1 – 2 COM 2 RI Pin use +5V Default
Short 2 – 3 COM 2 RI Pin use +12V
J_COM_V3 Description
Short 1 – 2 COM 3 RI Pin use +5V Default
Short 2 – 3 COM 3 RI Pin use +12V
J_COM_V4 Description
Short 1 – 2 COM 4 RI Pin use +5V Default
Short 2 – 3 COM 4 RI Pin use +12V
Table 1-34: COM Port Pin 9 Voltage Setting Jumper Settings
The COM Port Pin 9 Voltage Setting jumper locations are shown in Figure 1-54 below.