Dell YT583 manual COM3

USB	Enables or disables the internal USB
Controller	controller. No Boot enables the controller
(On default)	but disables the ability to boot from a USB
	device.
	NOTE: Operating systems with USB support will recognize USB
	floppy drives regardless of the No Boot setting.
Front USB	Enables or disables the front USB ports.
Ports
(On default)
LPT Port	Determines the mode of operation of the internal parallel port.
Mode	Off disables the port. AT configures the port for AT
(PS/2	compatibility. PS/2 configures the port for PS/2 compatibility.
	EPP configures the port for the EPP bidirectional protocol.
default)
	ECP configures the port for the ECP bidirectional protocol.
	NOTE: If you set the LPT Port Mode to ECP, the LPT Port DMA
	appears in the option menu.
LPT Port	Determines the address that the built-in parallel port uses.
Address
Serial Port	Determines how the serial port operates.
#1	Off disables the port. Auto, the default setting, automatically
(Auto	configures a connector to a particular designation (COM1 or
default)	COM3).
Serial Port	Determines how the serial port operates.
#2	Off disables the port. Auto, the default setting, automatically
(Auto	configures a connector to a particular designation (COM2 or
default)	COM4).
PS/2 Mouse	Enables or disables the integrated legacy PS/2-compatible
Port	mouse controller.
(On default)

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System Setup