Black Box LE2720C Expansion ModuleDesigned for enterprise grade reliability in demanding environments, the Black Box LE2720C Expansion Module delivers unmatched network availability through dual power supplies, remote manageability, and advanced high availability features. Built to operate across extreme temperatures ( 40 to +185F 40 to +85C), this expansion module minimizes downtime and eliminates costly truck rolls by enabling seamless configuration and monitoring from a distance.