Product information:

Single Slot Primary Management Module
The most popular management card. This device occupies a single slot in the Point System chassis and it fully supports all management features. The CPSMM-120 has a DB-9 serial interface for the CLI (command line interface) as well as a 10BASE-T RJ-45 interface for network management. The CPSMM-120 should be used when the Point System chassis is intended to be used as a single device (when the user does not intend to stack multiple Point System Chassis together.)