Fibre Channel Expansion Card - IBM Brocade 4 Gb SAN Switch Module Installation Manual

Fibre Channel expansion card

You must install a Fibre Channel expansion card in the blade servers when
installing the switch module. The expansion card is needed for communication
between the blade server and the switch module. For information about the
types of compatible Fibre Channel expansion cards for the blade servers,
contact your IBM marketing representative or authorized reseller. See the
expansion card documentation for details about expansion card installation,
configuration, and use.
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Brocade 4 Gb SAN Switch Module: Installation Guide