I purchased an Intel 7260HMW (802.11ac) card to replace the original 802.11n card in my Intel NUC DN2820FYKH. The DN2820 was recently upgraded to OpenELEC 4.0.0 which has the Linux 3.14.2 kernel. The card could see both the 2.4GHz and 5.0GHz bands from my ASUS RT-AC68U 802.11ac router. When connecting to either band, if I stream video over the network, the stream starts and stops a few times in less than a minute and then the 7260HMW drops the connection to the router. I re-installed the 802.11n card and the network worked without problems. OpenELEC 4.0.0 has the 7260-8 firmware. I was not successful in adding the 7260-9 firmware file to the /lib/firmware directory. I hope the patch mentioned in the previous post can fix the problems I'm seeing with the 7260HMW.
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