A:AnswerThis is rated for up to 433 Mbps.
Here is a link to the capabilities and specs: https://www.netgear.com/home/products/networking/wifi-adapters/A6100.aspx
A:AnswerIf I understand the question correctly....This will work with a secure connection to a router or access point.
Here are the specs: https://www.netgear.com/home/products/networking/wifi-adapters/A6100.aspx
As far as the range....That is typically more dependant of the distance to the router or access point.