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SE7500CW2 Server Board Technical Product Specification
programmed accordingly. Hot plugging of mouse and keyboard from the PS/2 connector is not
supported by the system and may have unpredictable results. The BIOS will support the keyboard
or mouse in either PS/2 location.
By BIOS automatic detection and swap during POST, Both PS2 port can either support the Mouse
or Keyboard, but cannot support the 2 same devices (Keyboards or Mice) at the same time.
6.2.6.1
Boot without Keyboard and/or Mouse
The system can boot with or without a keyboard and/or mouse. Setup does not include an option
to disable them. The presence of the keyboard and mouse is detected automatically during
POST, and, if present, the keyboard is tested. The BIOS displays the message "Keyboard
Detected" if it detects a keyboard during POST and it displays the message "Mouse Initialized" if
it detects a mouse during POST. The system does not halt for user intervention on errors if
either the keyboard or the mouse is not detected.
6.2.7
Floppy Drives
The SE7500CW2 server BIOS supports floppy controllers and floppy drives that are compatible
with IBM* XT/AT standards. Most floppy controllers have support for two floppy drives although
such configurations are rare. At a minimum, the SE7500CW2 BIOS supports 1.44 MB and 2.88
MB floppy drives. LS-120 floppy drives are attached to the IDE controller and are covered
elsewhere.
The BIOS does not attempt to auto-detect the floppy drive because there is no reliable algorithm
for detecting the floppy drive type if no media is installed. The BIOS auto-detects the floppy
media if the user specifies the floppy drive type through setup.
The BIOS also support the selection in Set-Up for user to make the choice for the 1.44/2.88 MB
or disabled.
See the following table for details on various floppy types supported by each floppy drive.
Table 10: Allowed Combinations of Floppy Drive and Floppy Media
Floppy Drive
1.44 MB (ordinary)
2.88 MB (ordinary)
Note: The recovery BIOS requires a 1.44 MB media in a 1.44 MB floppy drive.
6.2.8
Universal Serial Bus (USB)
The SE7500CW2 server BIOS supports a USB keyboard, mouse and boot devices. The
SE7500CW2 server platforms contains three USB host controller. Each host controller includes
the root hub and two USB ports. Only 4 USB ports are supported in this platform. During POST,
1
IRQ 12 is not available for other devices if a mouse is not present.
37
Revision 1.40
Floppy Format
1.44 MB
1.44 MB
2.88 MB
1
DENSEL pin is ignored by these floppy drives
The DENSEL pin is ignored by these floppy drives
System BIOS
Note
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