Hi [NAME]  the Intel® Dual Band Wireless-AC 3160 with Max Speed of 433 Mbps can be upgraded to Intel® Dual Band Wireless-AC 8260 with Max Speed of 867 Mbps. The AC 8260 card is recommended within Dell Alienware 15 R2 Wireless | Dell Alienware 15 R2 Laptop Parts (parts-people.com). 
Hi guys,I have the above laptop and I want to replace the Intel AC-3160 wireless card that's installed in there. Can anybody recommend a good card that will work? I got the Intel 9560NGW from eBay and installed the card only to find that its not being detected by the system in any form. Can someone point me in the direction of one that will work? Thanks
15 R2, WiFi upgrade from Intel AC-3160