Acer R700 manual Server Board Jumpers, Label Jumper Name What it does at system reset

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Server Board Jumpers

Label	Jumper Name	What it does at system reset
A	RJ-45 Serial Port	Configures either a DSR or a DCD signal to
	Config	the connector. See “RJ-45 Serial Port” on
		page 15.
B	CMOS CLR	If these pins are jumpered, the CMOS
		settings are cleared. These pins should not
		be jumpered for normal operation.
C	PSWD CLR	If these pins are jumpered, the password is
		cleared. These pins should not be
		jumpered for normal operation.