We recommend you to contact the http://www.intel.com/support/oems.htm Computer Manufacturer Support in order to confirm if the Intel® Dual Band Wireless-AC 7260, or other Intel® Wireless Adapter is compatible with your PC. They would be the ones to let you know which wireless adapters are supported with your computer.
Installing or upgrading the various Intel® Wireless Adapters by end users is not supported by Intel. They can only be installed by the manufacturer or its authorized representative.
For more information please check the following advisories:
http://www.intel.com/support/wireless/wlan/sb/CS-011644.htm Intel® Wi-Fi Products — Regulatory Information Regarding Hardware Installation or Upgrade
http://www.intel.com/support/wireless/wlan/sb/CS-031167.htm Intel® Wi-Fi Products — Why Doesn't My Laptop Recognize My New Intel® Wireless Adapter?
http://www.intel.com/support/wireless/sb/CS-006192.htm Wireless Networking — Installation Error when Installing or Swapping Intel Wireless Adapters