Com1 And Com2 Voltage Jumper; Figure 28: Com1 And Com2 Voltage Jumper Diagram; Table 24: Clear Cmos Jumper Settings; Table 25: Com1 And Com2 Voltage Jumper Settings - VIA Technologies EPIA-M930 User Manual

Table 24: Clear CMOS jumper settings

Note:
Avoid clearing the CMOS while the system is on and system power is connected; it will damage the board.

3.2 COM1 and COM2 Voltage Jumper

The voltage for COM1 and COM2 is controlled by the jumper labeled as "COM_S1". The voltage can be either
+5V or +12V. +5V is the default setting. The odd pin numbers correspond to COM1. The even pin numbers
correspond to COM2. The jumper settings are shown below.
+5V (default)
+12V

Figure 28: COM1 and COM2 voltage jumper diagram

+5V (default)
+12V
+5V (default)
+12V

Table 25: COM1 and COM2 voltage jumper settings

Settings Pin 1
Regular (default) Open
Clear CMOS Short
Clear RTC Register Open
1
COM1 Settings Pin 1
Short
Open
COM2 Settings Pin 2
Short
Open
VIA EPIA-M930 User Manual
Pin 2 Pin 3
Open Open
Short Open
Short Short
Pin 3 Pin 5
Short Open
Short Short
Pin 4 Pin 6
Short Open
Short Short
22