Dell OptiPlex 755 User Manual page 11

SMART Reporting
(Off default)
Onboard Devices
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
Integrated NIC
routine is not available from the network server, the computer attempts to boot from the next device in the boot sequence list.
(On default)
Enables or disables the onboard audio controller.
Integrated
Audio
(On default)
Enables or disables the internal USB controller. No Boot enables the controller but disables the ability to boot from a USB device.
USB Controller
(On default)
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.
Rear
Quad/Triad USB
(On default)
Enables or disables the lower USB ports on the back of the computer.
Rear Dual USB
(On default)
Enables or disables the front USB ports.
Front USB
(On default)
Enables or disables all PCI and PCI Express slots.
PCI Slots
(On default)
Determines the mode of operation of the internal parallel port. Off disables the port. AT configures the port for AT compatibility. PS/2
LPT Port Mode
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.
(PS/2 default)
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.
LPT Port
Address
Determines how the serial port operates.
Serial Port #1
Auto, the default setting, automatically configures a connector to a particular designation (COM1 or COM3).
(Auto default)
Determines how the serial port operates.
Serial Port #2
(Auto default)
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
This setting specifies which video controller is primary, Auto or Onboard/Card. When Auto is selected, the add-in video controller will be
Primary Video
used.
(Auto
default)
NOTE: A PCI Express graphics card will override the integrated video controller.
Performance
The hyperthreading option is displayed if the installed processor supports hyperthreading.
HyperThreading
Determines whether the physical processor appears as one or two logical processors. The performance of some applications
(On default)
improves with additional logical processors. On enables hyperthreading.
Determines whether the processor will have one or two cores enabled. On enables the second core.
Multiple CPU Core
(On default)
Specifies whether a virtual machine monitor (VMM) can utilize the additional hardware capabilities provided by Intel
Virtualization
Virtualization technology.
(Off default)
Specifies whether a Virtual Machine Monitor (VMM) can use the additional hardware capabilities provided by Intel Virtualization
VT for Direct I/O
Technology for Direct IO. Default is Off.
AHCI
l
ATA
l
This setting determines whether integrated drive errors are reported or not during computer start-up.