Dell POWEREDGE M1000E - Manual (Page 81)

Configuring the I/O Modules 81
10 Gb Ethernet Pass-Through I/O Module
The 10 Gb Ethernet pass-through module supports 10 Gb connections
and provides a direct connection between the optional internal Ethernet
mezzanine card in the blade and an external Ethernet device. The Ethernet
pass-through modules are hot-swappable and may be installed in Fabric B or
Fabric C.
The 10 Gb Ethernet pass-through I/O module enables you to use optical SFP,
SFP+, and direct-attached copper (DCA) SFP+ modules. To operate the I/O
module and the SFP+ modules at 10 Gbps, you must use either optical SFP+
short reach (SR), long reach multimode (LRM), or DCA SFP+ modules. This
module does not support 1G mezzanine or network daughter cards in blades.
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