enterprise-class integrated services (ISR) routers high-performance. The Cisco ISR 4461/K9 is a 2U (or 3U rack-mountable device depending on specific configuration/accessories) that excels in scalability and performance., Aggregate Throughput: 1.5 Gbps (default), expandable to over 7 Gbps with performance/boost licenses., Onboard Doors:, 4 Gigabit Ethernet ports (RJ-45 and SFP combo)., 2 10 Gigabit Ethernet (SFP+) ports, Expansion Slots:, 3 Network Interface Module (NIM) slot., 3 slots for advanced service modules (SM)., 1 Internal Services (ISC) card slot., Memory:, Default DRAM: 4 GB (data plan) and 8 GB (control plane/services), expandable., Default Flash Memory: 8 GB, expandable., Power supply: Internal AC, DC, and PoE power options, with support for redundant power supply., Advanced Features: Includes SD-WAN capabilities, IPsec VPN hardware acceleration, QoS, and advanced traffic management.