Cisco 2921 2900 Series CISCO2921/K9 Integrated Services Router
Service Module Slots: 1 (1x double-wide). Addt'l Ports: 2x USB Type A, USB Type B, console, AUX. DRAM: 512 MB default, 2 GB max. DSP/PVDM3 Slots: 3. ISM Slots: 1. Price is for 1 item. Modular Slots: 4x EHWIC (2x double-wide).