Black Box SM962A Expansion Module - Pro Switching Controller Card, SNMP/RS 232/Manual Switchings For Switching Network 1 x RJ 45 LAN, 2 x RJ 11 Network Twisted Pair 1 TAA Compliant

The Controller Card is the key to the Pro Switching System Plus. One is required for each 18-slot chassis, and it takes up two card slots. The Controller Card enables you to individually switch any port from the front panel, or gang switch the entire system. With the intelligent card, you can also switch using SNMP or an RS-232 connection.