The 4220 Series Installation Guide released in March 2026 has been updated for memory information. The guide now provides comprehensive details on the 4220 Series Cloud Managed Switches, highlighting their capabilities for end-to-end secure network segmentation, advanced policy capabilities, and high-density scale-out architecture. Additionally, the document includes new information on the flexible management options through the cloud, network, or command-line interface, and introduces details on secure boot processes, fan modules, and power supplies. This guide is intended for network administrators responsible for installing and setting up network equipment, assuming a basic working knowledge of LANs, Ethernet concepts, Ethernet switching and bridging concepts, routing concepts, and SNMP. These updates aim to enhance the usability and functionality of the guide, ensuring users have the most current and comprehensive information for installing and configuring the Extreme 4220 Series switches.