Keep an Infoblox 1550-A appliance under a defined five-year Level 3 maintenance term. IB-MAIN-1550-A-NS1-35 is a service entitlement rather than an appliance, cable, software image, or mounting accessory. Its coverage is tied specifically to the Infoblox 1550-A platform, making the covered product designation and service duration the central compatibility checks. Level 3 maintenance identifies the maintenance tier for this entitlement. The five-year period is useful where the appliance remains in service over a longer operating horizon and maintenance coverage must remain associated with the installed platform. This service is intended for an existing compatible appliance; it does not represent a replacement for the hardware itself. Match the entitlement to the appliance model before assigning coverage. The 1550-A designation identifies the supported Infoblox platform, while the full ordering code identifies this five-year Level 3 maintenance selection. Use the exact code where the required term and maintenance tier must correspond to the installed appliance. No hardware characteristics, capacity figures, interfaces, or appliance accessories are conveyed by this maintenance entitlement.