The Cisco 2921 router, supporting voice module, is designed for small offices. Product Code CISCO2921/k9 Rack Units 2U Interfaces 3 integrated 10/100/1000 Ethernet ports (RJ-45 only) Expansion Slot(s) 2 service module slot 1 Internal Service Module slot 3 onboard digital signal processor slots 4 Enhanced high-speed WAN interface card (EHWIC) slots RAM 512 MB (installed) / 2 GB (max) Flash Memory 256 MB (installed) / 8 GB (max) Dimensions 47 cm x 43.8 cm x 8.9 cm Package Weight 18.93 Kg
