Switch block and jumper settings
X507
2
4
6
1
3
5
OPE
N
ON
1
2 3
4
J3
J2
2
4
6
3 1
5
Switch 1 = BIOS recovery
X507 = Jumper for keyboard and
Switch 2 = Service (always OPEN)
pointing device
Switch 3 = BIOS update
Switch 4 = Floppy disk write-protection
BIOS recovery - Switch 1
Switch 1 enables recovery of the old BIOS after an attempt to update it has failed.
To restore the old BIOS you need a Flash BIOS disk (call customer service) and
the BIOS updating must be enabled (switch 3 set to OPEN).
ON
The system BIOS executes from floppy drive A: and restores the
flash BIOS on the system board.
OPEN
The system BIOS executes from the system board (default setting).
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Switch block and jumper settings
BIOS update - Switch 3
Switch 3 enables and disables BIOS updating. In addition, when updating the BIOS
you must ensure that the
Flash Write
field in the
BIOS-Setup
Security
menu is set to
Enabled
.
If you wish to update your system BIOS, please consult our customer service.
ON
System BIOS is write protected (BIOS updating disabled).
OPEN
BIOS updating is enabled (default setting).
Write protection for floppy disk drive - Switch 4
Switch 4 is used to define whether floppy disks can be written or deleted in the
floppy disk drive. To write and delete floppy disks, the field
Diskette Write
in the
BIOS-Setup
Security
menu must be set to
Enabled
.
ON
Read only floppy disks.
Open
Read, write and delete floppy disks (default setting).
Keyboard and pointing device - Jumper
The setting of jumper X507 depends on which keyboard and pointing device you
want to use.
1-3 inserted
Keyboard (without power switch, with integrated trackball) and
mouse.
1-3 and 4-6 inserted
Keyboard (with/without power switch) and mouse
(PS/2 default setting).
3-5 and 2-4 inserted
Keyboard (without power switch, with integrated trackball).
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A26361-D842-Z120-6-7619
