The Cisco 4000 Series is DEFAULD on a multicore CPU architecture. It WORKS WITH modular Cisco IOS XE Software, which allows the platform to use to full advantage a distributed multicore architecture. The architecture of the Cisco 4000 Series separates control- and data-plane operations and integrates an industry-first services plane. This design delivers full-featured integrated services up to Layer 7 at high performance, with the ability to deliver application-aware network services while maintaining a stable platform and a high level of performance during periods of heavy network traffic. Product Code Cisco ISR4221-SEC/K9 Bundle Cisco ISR 4221 SEC Bundle with SEC lic Aggregate Throughput 35 Mbps to 75 Mbps Total onboard WAN or LAN 10/100/1000 ports 2 RJ-45-based ports 2 SFP-based ports 1 NIM (Network Interface Modules) slots 2 Onboard ISC slot No Default memory double-data-rate 3 (DDR3) error-correction-code (ECC) DRAM (Combined control/services/data planes) 4 GB Flash Memory 8 GB Power-supply options External AC only Rack height 1 RU Dimensions (H x W x D) 1.72 x 12.7 x 10 in (43.7 x 322.6 x 254 mm) Weight with AC PS (no modules) 7.1 lb (3.22 kg)