The fourth-generation Cisco Nexus 2232PP Fabric Extender allows for a greater number of Cisco UCS C-Series Rack Servers.
Cisco UCS C-Series Rack Server FEX connect mode enables 32 host-capable connections per FEX and six uplink ports.
Cisco UCS C-Series Rack Server FEX connect mode has the following features:
M5 servers could use VICs 1455 or 1457 to achieve 10 Gbps connectivity.
The following figure shows a Cisco UCS fourth-generation configuration with Cisco UCS C-Series Rack Servers in FEX connect mode: