Cisco Security Router - 4 x 10/100Base-TX LAN, 1 x 10/100Base-TX WAN
Package Contents: Cisco 851 Security Router Cisco 850 Series IOS ADVANCED SECURITY Black power cord for adapter Product documentation Light blue console cable Cisco SDM ...
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As low as $172.50 out of 2 sellers
User Review: Manual never said anything about this. I had to find this out by trial and error for several hours. Other Thoughts: The SDM from CD will get this working on a cable modem.