Well, all I can say is my CC m3 and CC m5 Compute Sticks all connected to 5GHz immediately, without intervention, without settings changes and without issue. I have similar (D-Link DIR-865L AC-1750) Router. Both say their connect speed is 866.7 Mbps.
Thanks Scott. I have tons of devices and haven't had many networking issues. I wanted to see if the problem was endemic of the compute sticks or the 8260 wifi. I can't really find anything about people having routine issues with it or requiring that setting to be adjusted down to one to make the device work.
The device and router are 10' away from each other in the same room with line of sight. I don't have any neighbors close enough to give me any interference on the 5GHz band.
I also stuck two different AC USB adapters (netgear and tp-link) into the stick and those connected and ran just fine. I tried both Linux and Windows 10 with the same result of the 8260 internal Wifi not working and external sticks working okay.
Windows 10 was updated to current and I had the latest Intel driver for the 8260 installed, along with the latest bios and other drivers, installed with the intel driver update tool.
Thank you for contacting the Intel community.
We have tested this unit and it connects without problem.
We recommend using channel bonding in the 5 GHz band. We recommend using channel bonding because of the limited available non-overlapping channels in the 2.4 GHz band.
If you keep having issues try to get a replacement from Intel, you can submit a request here:
You can create an online service request or you can contact Intel via chat support.
Well, if the issue is anything "endemic" to/with the 8260, I haven't heard anything. You could post a query in the Wireless Networking support forum and see if the experts there have seen any (similar) issues with the 8260...
Overall, I avoid eBay like the plague...
I did put a post there, to get this from either end...device or wireless tech.
I quit selling on ebay as its really a huge hassle these days, but this is the first time I had a big seller problem. Most of the problem is the guy not understanding ebay rules about returns and defective products. He's determined to make it look non defective and my "fault" for not configuring the device correctly.
Thanks Ivan! And thanks to everyone for some confirmation.
Ebay decided I should get all of my money back. Woo hoo!
I’m glad that you will get the money back and if you need anything else please let me know and I will be more than glad to assist you.