Hello Guys, i ordered the TP Link Archer C7 Router its arriving tomorrow. And now i have a really important Question. The Router has 3 Internal Antennas, and 3 external Antennas. At the Amazon Consumer Reviews someone write the external brands are useless you cant use them for 2,4GHz they are only sending internet signal for 5 GHz. Now i watched a Video and someone said the same thint but on the Pictures at Amazon and TP Link for the C7 is written the external antennas are working with 2,4GHz. Please answer the question it is very important for me.

And one more question, if 2,4GHz is working on the 3 external and internal antennas at same time, i ordered 8dbi 2,4ghz antennas from TP Link  - productname  TL-ANT2408CL

will all work like i want ?