Q What is the WS-C4900M?
A Cisco Catalyst 4900M - switch - 8 ports - managed - rack-mountable. The Cisco Catalyst 4900M Series is a premium extension to the widely deployed Cisco Catalyst 4900 Series top-of-rack Ethernet switch specifically designed for data center networks.
Q What is the Cisco 4900 series?
A Cisco Catalyst 4900 Series switches wired speed throughput on all ports from 96 Gbps to 320 Gbps. Performance from the 4900 series is never in question since switching is guaranteed regardless of the number of router entries or even if layer 3 or 4 services are enabled.