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TL-ER5120
-fixed gigabit WAN port, 1 fixed gigabit LAN/DMZ port and 3 -freely interchangeable gigabit WAN/LAN ports
-Abundant security features including ARP Inspection, DoS -Defense, URL/Keyword Domain Filter and Access Control
-Deploys One-Click restriction of IM/P2P applications to -easily manage staff online behavior
-Supports PPPoE Server for the better management of -internal network
-Load Balancing, automatically selects the best route -according to the load
Professional 4kV lightning protection keeps your -investments as safe as possible
http://www.tp-link.us/products/detai...TL-ER5120#spec
TL-WN881ND
-Wireless N speed up to 300Mbps makes it ideal for video streaming, online gaming and Internet calls
-MIMO technology with stronger signal penetration strength, wider wireless coverage, providing better performance and stability
-Easily setup a highly secured wireless link with WPS™ (Wi-Fi Protected Setup)
http://www.tp-link.us/products/detai...L-WN881ND#spec
TL-WDN4800
-Dual Band support - 2.4GHz or 5GHz channels bring an optimized HD video streaming, file sharing and online experience
-Today’s fastest wireless speeds of up to 450Mbps
-Three antennas increase wireless performance and stability
http://www.tp-link.us/products/detai...L-WDN4800#spec
TL-WR702N
-Compatible with IEEE 802.11b/g/n
-Wireless speed up to 150Mbps
-Compact and portable, small enough to take on the road
-Powered through a micro USB port by an external power adapter or USB connection to a computer
-Compatible with almost all 2.4GHz Wi-Fi devices
-Supports AP, Router, Client, Bridge and Repeater operation modes
-Supports WEP, WPA/WPA2, WPA-PSK/WPA2-PSK encryptions
http://www.tp-link.us/products/detai...TL-WR702N#spec