Fujitsu Primergy BX900 S2 Operating Manual page 20

Functional overview
Connection Blade GbE Switch/IBP 36/8+2 (SB11)
36 internal 1-Gbit/s ports to the server blades
8 external 1-Gbit/s ports through RJ45 connections
2 external 10-Gbit/s ports through SFP+ modules via fiber-optic or
copper cable
1 internal stacking port to the midplane of the BX900 S2 system unit
1 external stacking port through a CX4 connection
Installable in all connection blade slots
I
This connection blade can be used as a layer-2 switch or an
Intelligent Blade Panel (IBP).
The stacking ports allow up to 8 SB11 connection blades to be
switched together to form a so-called stack, see the
"PRIMERGY BX900 S2 System Unit Upgrade and Maintenance
Manual".
1 Gb Ethernet connection blades in slots CB3/4 (fabric 2),
CB5/6 (fabric 3) and CB7/8 (fabric 4) only support server blades
that are fitted with an 1 Gb Ethernet mezzanine card.
20 Operating Manual
BX900S2