I have a Gigabit CT Desktop Adapter card, it works very well.
I intend to buy Wireless-AC 7260 card for desktop and use it to share internet connection that goes in to my PC through desktop adapter, eliminating the need for a router.
Will I be able to do this? How stable and supported this use case is? I tried this with USB dongles in the past and got a lot of BSODs as result.
OS is Win8.1 Pro x64.
Intel® My WiFi Dashboard can only share from wireless connection (not ethernet) but you may try using Windows* Internet Connection Sharing.