MX2820 SCU, The MX2820 SCU (24V - is a plug-in unit for the MX2820 chassis that acts as an interface between the user and the modules in the MX2820 system. The MX2820 SCU also allows provisioning of IP, security, and craft port settings.)
NetVanta 1224 Accessories, NetVanta 1224R/1224STR VPN Upgrade (Hardware and software upgrade to support IPSec based VPN in the NetVanta 1224R and 1224STR only. Includes support for DES/3DES/AES encryption and includes MD5/SHA1 authentication. Compatible with the NetVanta 2000 series)