3Com 4200G 12-Port Configuration Manual page 22

# Set the maximum number of commands the history command buffer can store to 20.
[Sysname-ui-aux0] history-command max-size 20
# Set the timeout time of the AUX user interface to 6 minutes.
[Sysname-ui-aux0] idle-timeout 6
After the above configuration, you need to modify the configuration of the terminal emulation utility
running on the PC accordingly in the dialog box shown in Figure 2-4 to log in to the switch successfully.
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