I recently upgraded my internet service and I have had some issues with my 6 year old modem and router so I upgraded to a Motorola SB6141 and a Linsys AC900 EA6200.
Now I am looking for a good wireless adapter to go with the networking. I looked at some cards that say s they are
Wireless Adapter - Dual Band, 802.11 a/b/g/n/ac, 2.4GHz - 5.0GHz, 300Mbps - 867Mbps
, so what does that mean? Does a card adapter like this use two bands at once for a combined speed or is that just stating that one band you get such and such speed and the other one you can get a better speed? If I have a ac router and ac adapter which number do I need to focus on or is it actually a simultaneous speed using both bands?