Dell OptiPlex 780 Ultra Small Form Factor Service Manual page 11

Sets the base I/O address of the integrated parallel port.
Parallel Port
Address
Identifies and defines the serial port settings. You can set the serial port to:
Serial Port #1
NOTE:
(COM1 or COM3).
Enables or disables the following onboard devices:
Miscellaneous
Devices
Video
Primary Video Specifies which video controller is primary when two video controllers are present on the computer.
Performance
Multi Core Support Specifies whether one or all the cores of the processor will be enabled.
NOTE:
Enables or disables the Intel SpeedStep mode.
Intel® SpeedStep™
This option is disabled by default.
Enables or disables the CPUID limit.
Limit CPUID Value
This option is disabled by default.
Sets the performance speed and noise level of your hard drive to:
HDD Acoustic Mode
Virtualization Support
Enables or disables the Virtual Machine Monitor (VMM) from utilizing the additional hardware capabilities
VT for
Direct I/O
provided by Intel Virtualization technology for direct I/O.
Security
Provides restricted access to the computer's system setup program in the same way that access to
Administrative
Password
the system can be restricted with the System Password option.
This option is not set by default.
Displays the current status of the system's password security feature and allows a new system
System
Password
Disable
AT
PS/2 (default)
EPP
ECP No DMA
ECP DMA 1
ECP DMA 3
Disable
Auto (default)
COM1
COM3
Auto, the default setting, automatically configures a connector to a particular designation
Front USB
Rear Dual USB
Rear Quad USB
PCI slots
Audio
Auto (default)
Onboard/PEG
The performance of some applications improve with additional cores.
Bypass (default)
Quiet
Suggested
Performance