(Formerly JL686A#ABA) The Instant On 1930 48G 4SFP+ PoE switch is a high-performance, smart-managed Layer 2+ gigabit Ethernet switch designed for small and medium businesses with fast set-up, easy management, advanced features for high performance, and built-in security. Features 370W of Class4 PoE on 48 ports to power access points, cameras, IP phones and other IoT devices. The B model offers all the same features and benefits as the A models, in addition to improved acoustic performance EASY SET UP AND MANAGEMENT: Set up, manage, and monitor your Instant On switches and access points from any device using the Instant On mobile app or web browser –no recurring cost, subscription or license required. Guided step-by-step instructions to install devices and get your network up and running quickly –no technical expertise required. Alternative integrated traditional full local web interface for advanced configuration with static routing, ACLs, SNMP CONFIGURATION: Rack-width design with rack mounting ears. Or place desktop or flat surface. Ports and LEDs facing the front. Fanless silent operation PORTS: Features 52 active ports | 48x gigabit 10/100/1000/1000 with 4x 1G/10G SFP+ uplink ports | 10G capable copper RJ45 ports and fiber-capable SFP+ slots | Power over Ethernet: Class 4 PoE on 48 ports | PoE power budget 370 Watts WARRANTY & SUPPORT: Manage your network with confidence thanks to an industry-leading limited lifetime warranty and support ROBUST SECURITY: Protect your network from unauthorized users, and keep your business data safe with Global Storm Control, TPM (Trusted Platform Module)-based security, VLANs, plus MAC and IP address filtering and restriction