I use a Engenius EAP1750H access point in our house. Didable the onboard when you do not need it.

You can get it cheaper than $22 on Newegg. NETGEAR WiFi USB 2.0 Adapter - AC Dual Band (A6200) : NETGEAR WiFi USB 2.0 Adapter - AC Dual Band (A6200): Computers Accessories My son has this one for backup for his Macbook. Go with an adapter that allows you to turn the antenna and also use a USB A to A jumper when you have to get the best signal. I did locate the second antenna in the battery area, since I did not want to tear apart the beazel. I put the Intel Dual Band Wireless-ac 7260 in my wife's Toshiba Satellite with no issues. It is the only way that they can cram more battery life out od what will become a throw away device like cellphones and tablets. Pretty soon, manufacturers are going to start following Apples way on making laptops sealed and a board about the size of a iPhone or just a bit larger.

The Netbooks and ChromeBooks that are limited for onboard. I thought so to, until I found out that it was nothing more than a runor at this point. Do you know whether that is the case with the ASUS N56VJ?That is actually false. I've read that the BIOS on some laptops have a whitelist that restricts what adapters can be used.

Qualcomm atheros ar9485 support 5ghz