Dell OptiPlex 755 User Manual page 283

USB Controller
(On default)
Rear Quad/Triad USB
(On default)
Rear Dual USB
(On default)
Front USB
(On default)
PCI Slots
(On default)
LPT Port Mode
(PS/2 default)
LPT Port Address
Serial Port #1
(Auto default)
Serial Port #2
(Auto default)
Video
Primary Video
(Auto default)
Enables or disables the internal USB controller. No Boot enables the controller 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.
Enables or disables the upper USB ports on the back of the computer.
Enables or disables the lower USB ports on the back of the computer.
Enables or disables the front USB ports.
Enables or disables all PCI and PCI Express slots.
Determines the mode of operation of the internal parallel port. Off disables the port.
AT configures the port for AT compatibility. PS/2 configures the port for PS/2
compatibility. EPP configures the port for the EPP bidirectional protocol. 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.
Determines the address that the built-in parallel port uses.
Determines how the serial port operates.
Auto, the default setting, automatically configures a connector to a particular
designation (COM1 or COM3).
Determines how the serial port operates.
NOTE:
Only available if a PS/2 serial port adapter is installed.
Auto, the default setting, automatically configures a connector to a particular
designation (COM2 or COM4).
This setting specifies which video controller is primary, Auto or Onboard/Card. When
Auto is selected, the add-in video controller will be used.
NOTE:
A PCI Express graphics card will override the integrated video controller.
Advanced Features
283