APC Subscription, Network Management Cards, 6 year, Secure NMC System, 1 Smart-UPS device, reduce your exposure to attack and stay up-to-dateAPC Subscription, Network Management Cards, 6 year, Secure NMC System, 1 Smart UPS device, reduce your exposure to attack and stay up to date 6 year Secure NMC System (SNS) subscription for Smart UPS. SNS safeguards your business, ensuring ongoing security certification and compliance for your Network Management Card (NMC). The SNS delivers the highest level of security (IEC 62443 4 2 certified), reduces your exposure to attack, and ensures you stay