Dell POWEREDGE M1000E - Manual (Page 85)

Configuring the I/O Modules 85
4G Fibre Channel Pass-Through I/O Module
The 4G Fibre Channel pass-through module provides a bypass connection
between a Fibre Channel mezzanine card in the blade and optical transceivers.
The bypass connection enables a direct connection to a Fibre Channel switch
or a storage array. The 16 pass-through ports on this module can negotiate
speeds of 1, 2, or 4 Gbps. The 4G Fibre Channel pass-through module is
hot-swappable, and may be installed in Fabric B or Fabric C.
NOTE: To ensure proper functionality, use only the Short Wave Small Form Factor
Pluggable (SFP) transceivers provided with this module.
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