Dell OptiPlex 755 - Manual (Page 11)

l AHCI
l ATA
SMART Reporting
(Off default)
This setting determines whether integrated drive errors are reported or not during computer start-up.
Onboard Devices
Integrated NIC
(On default)
Enables or disables the integrated NIC controller. Settings are On, Off, or On w/ PXE. When the On w/ PXE setting is active, if a boot
routine is not available from the network server, the computer attempts to boot from the next device in the boot sequence list.
Integrated
Audio
(On default)
Enables or disables the onboard audio controller.
USB Controller
(On 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.
Rear
Quad/Triad USB
(On default)
Enables or disables the upper USB ports on the back of the computer.
Rear Dual USB
(On default)
Enables or disables the lower USB ports on the back of the computer.
Front USB
(On default)
Enables or disables the front USB ports.
PCI Slots
(On default)
Enables or disables all PCI and PCI Express slots.
LPT Port Mode
(PS/2 default)
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.
LPT Port
Address
Determines the address that the built-in parallel port uses.
Serial Port #1
(Auto default)
Determines how the serial port operates.
Auto, the default setting, automatically configures a connector to a particular designation (COM1 or COM3).
Serial Port #2
(Auto default)
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).
Video
Primary Video
(Auto
default)
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.
Performance
HyperThreading
(On default)
The hyperthreading option is displayed if the installed processor supports hyperthreading.
Determines whether the physical processor appears as one or two logical processors. The performance of some applications
improves with additional logical processors. On enables hyperthreading.
Multiple CPU Core
(On default)
Determines whether the processor will have one or two cores enabled. On enables the second core.
Virtualization
(Off default)
Specifies whether a virtual machine monitor (VMM) can utilize the additional hardware capabilities provided by Intel
Virtualization technology.
VT for Direct I/O Specifies whether a Virtual Machine Monitor (VMM) can use the additional hardware capabilities provided by Intel Virtualization
Technology for Direct IO. Default is Off.