Cisco 850 Series and Cisco 870 Series Access Routers Hardware Installation Guide - Router Cabling Procedures [Cisco 800 Series Routers] - Cisco Systems
CISCO857-K9-RF Cisco Routers
Cisco - 857 ADSL Wireless Router - 4 x 10/100Base-TX LAN, 1 x ADSL WAN CISCO857W-G-EK9-RF
Cisco 850 Series and Cisco 870 Series Access Routers Hardware Installation Guide - Product Overview [Cisco 800 Series Routers] - Cisco Systems
PLC Hardware - Cisco CISCO857-K9, Used in PLCH Packaging
Cheap Cisco CISCO857-K9 4 Port Router | Refurbished
Cisco 850 Series Cisco 857 Integrated Service Router With AC Adapter