Linksys RE6700 Setup information is fully provided here. Let us first get you familiar with your device. Linksys RE6700 extender a dual band wifi range extender, that can serve as both an access point and a range extender. It has a range of 10,000 square feet and uses 802.11ac technology to function. So, RE6700 AC1200 is the best option if you’re looking for a fix for bad wireless connectivity.