XM Cisco Abbreviation

Expansion Module

When referring to a network router, switch, server, or other network device a blade also known as an expansion module refers to a hardware component that can be installed into a chassis that allows for additional functionality, much like an expansion card in a computer, but often at a much bigger scale. For example, a router or switch with blade support allows complete customization, if more fiber lines are needed, additional fiber blades can be added.