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User's Manual
AT-ATX jumper is used to select the method of powering on the system. If you want the system to
power-on whenever AC power comes in, connect pins 2 and 3 of the jumper. If you want to use the power
button, connect pins 1 and 2 of AT-ATX.
When using AT-ATX "Power On" feature to power the system back on after a power failure occurs, the
system may not power on if the power lost is resumed within 5 seconds (power flicker).
2.3.4 JC1-COM2 RS232/R485/R422 Mode Select
Figure 2.9
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