The Cisco Catalyst Switch Module 3110G, 3110X, and 3012 for IBM BladeCenter referred to as the switch modules are Ethernet switch modules that you install in an IBM BladeCenter enclosure referred to as the blade enclosure. You can connect devices to the switch modules for connections to other network devices such as routers, servers, and other switches. The Catalyst Switch Module 3110G and 3110X support stacking through Cisco StackWise Plus technology. The Catalyst Switch Module 3012 does not support stacking. Unless otherwise noted, the term switch module refers to a standalone switch module and to a switch stack.