There seems to be some confusion on what the supported Nexus 7000/5000 FEX topologies are.
The first section deals with the supported Nexus 5000/5500 FEX topologies. The next section will show the Nexus 7000 FEX topologies.
The following topologies are valid for these NX-OS versions.
I created this post to help me remember the different Nexus 7000 I/O modules and their capabilities/features.
There are 2 classes of I/O Modules for the Nexus 7000; M-Series and F-Series.
Below is a list of the modules and their capabilities.
One of the questions that a lot of our UCS customers ask us is “What is the difference between Update Firmware and Active Firmware?”
Jeremy Waldrop's Blog 