Dell OptiPlex E1 - Manual (Page 20)

With Auto (the default option) selected, the system turns off the built-in EIDE interface when necessary to accommodate a
controller card installed in an expansion slot.
As part of the boot routine, the system first checks for a primary hard-disk drive controller card installed in an expansion slot. If no
card is found, the system enables the built-in EIDE interface to use IRQ14 and IRQ15.
If a primary controller is detected on the expansion bus, the built-in EIDE interface is disabled.
Selecting Off disables the built-in EIDE interface.
Diskette Interface
Diskette Interface controls the operation of the system's built-in diskette drive controller.
With Auto (the default option) selected, the system turns off the built-in diskette drive controller when necessary to accommodate a
controller card installed in an expansion slot.
With Write Protect selected, nothing can be written to diskette drives and tape drives using the system's built-in diskette drive
controller. (The system can still read from the drives.) When this option is selected, the Auto option (whereby the system turns off
the built-in diskette drive controller as necessary) is also in effect.
Selecting Off turns off the built-in diskette/tape drive controller; this option is used primarily for troubleshooting purposes.
PC Speaker
PC Speaker determines whether the on-board speaker is On (the default) or Off. A change to this category takes effect
immediately (rebooting the system is not required).
Video DAC Snoop
Video DAC Snoop lets you correct video problems that may occur when certain video expansion cards are used. The default is Off.
If you are using a video card and problems such as incorrect colors or blank windows occur, set Video DAC Snoop to On.
System Security
System Security configures the password and chassis intrusion options. Press to configure these options.
System Password
System Password displays the current status of your system's password security feature and allows you to assign and verify a new
password. No one can assign a new password unless the current status is Not Enabled, which is displayed in bright characters.
The System Password category has the following options:
Not Enabled (the default option)
Enabled
Disabled by Jumper
NOTE: Read " Using the System Password Feature " found later in this chapter for instructions on assigning a system
password and using or changing an existing system password. See " Disabling a Forgotten Password " found later in this
chapter for instructions on disabling a forgotten setup password.