Amazon.com: Cisco 2921 Integrated Services Router - 1 x SFP (Mini-GBIC), 2 x CompactFlash (CF) Card, 4 x HWIC, 2 x Services Module, 3 x PVDM - 3 x 10/100/1000Base-T WAN - CISCO2921-SEC/K9 : Electronics
CISCO2921-K9 V03 - Used - 2921 VOICE BUNDLE W/PVDM3-32,FL-CME-SRST-25,UC LICENSE PAK - 512MB DRAM FOR CISCO 2901-2921 ISR - CISCO 2921/2951 AC POWER SUPPLY - PVDM3 32-CHANNEL TO 64-CHANNEL FACTORY UPGRADE (
Cisco 3900 Series and Cisco 2900 Series Hardware Installation Guide - Overview of the Routers [Cisco 2900 Series Integrated Services Routers] - Cisco