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Jumper Settings
Chapter: Connectors
3.5.2 BIOS Select
The CB1050 has two firmware hubs which makes it possible to store different BIOS versions in each hub. If
you then want to change from one BIOS to the other the "BIOS Select" jumper must be used. In the default
configuration this jumper is open which means that BIOS 1 is active. To activate BIOS 2 the jumper must be
closed. Of course, the board must be switched off before changing this or any other jumper setting.
C
AUTION
The second firmware hub can also be used as an option ROM. If this is the case closing the "BIOS Select"
jumper will render the board unable to start.
Beckhoff New Automation Technology CB1050
page 47
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