IEI Technology NANO-HM551, User Manual

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NANO-HM551 EPIC SBC
Page 50
Clear CMOS Description
Short 1 - 2 Keep CMOS Setup Default
Short 2 - 3 Clear CMOS Setup
Table 4-4: Clear CMOS Jumper Settings
The location of the clear CMOS jumper is shown in
6
Figure 4-8 below.
Figure 4-8: Clear CMOS Jumper
4.5.4 COM 3 Function Select Jumper
Jumper Label: J1
Jumper Type: 3-pin header
Jumper Settings: See Table 4-5
Jumper Location: See Figure 4-9
The COM 3 Function Select jumper sets the communication protocol used by the third
serial communications port (COM 3) as RS-232, RS-422 or RS-485. The COM 2 Function
Select settings are shown in the table below.
Setting Description
1-2 RS-232 (Default)
2-3 RS-422/485
Table 4-5: COM 2 Function Select Jumper Settings