IBM B48Y At-A-Glance Reference Manual page 5

10 GbE SFP+ optical –SR (10GBASE-SR) transceivers support distances up to 300 m, ideal for
connectivity within a data center. 10 GbE SFP+ optical –LR (10GBASE-LR) transceivers support extended
distances up to 10 km.
Figure 3. SFP+/SFP optical transceiver, receives duplex LC connectors
For cost-effective server connectivity within a rack, 10 GbE copper direct-attach SFP+ active TwinAx
cables are available. These cables have two 10 GbE SFP+ transceivers attached on either end of the
cable and have been tested for compatibility with the Brocade 10Gb CNA, QLogic 10Gb CNA, and
Emulex 10Gb Virtual Fabric Adapter for IBM System x. Compatibility with other 10 GbE server adapters
and network devices is up to the user to determine.
Figure 4. 10 GbE Direct Attach SFP+ TwinAx Cable
IBM Ethernet Switch B48Y 5