Thank you for joining the Intel communities.
Maybe you will be able to find it in eBay or any other online reseller like best buy etc but I’m not sure.
At this point for you to find the best support for your system it will be with your laptop manufacturer as they are more familiar with your system and how all the components interact with each other and also they will be able to tell if the WIFI adapter you purchase will be compatible with your system.
Adding to ivanu_intel's information, we would like to inform you that Intel does support integration which is when the original wireless adapter is replaced by another one. Please check this link for further information on this particular matter: Regulatory Information Regarding Hardware Installation or upgrade for...