Apologies for the agents comment. Correct. The 2017 Aurora R7 and 2018 Aurora R8 utilize different versions of AWCC (Alienware Command Center), (Aurora R7 4.8.20.0 versus Aurora R8 5.2.17 and later). All Alienware peripheral devices (keyboard, mouse, headphones) require that you also install the applicable "Alienware Gaming Peripheral driver". This allows the AWCC to "see" the peripheral device. The problem is that the earliest version of Alienware Gaming Peripheral driver is NOT supported with the Aurora R7 latest version of AWCC 4.8.20.0. The earliest version of Alienware Gaming Peripheral driver starts supporting AWCC 5.2.45.0 which is not supported on your Aurora R7.
Yesterday I received as a gift an AW510K mechanical keyboard. My wife has one for her Alienware system, and it always looked nice. She went and got one for me as well. The issue I am running into is when launching the AWCC. I have an Aurora R7 Tower whereas my wife has the Aurora R8 model. The AWCC interface between the two computers are definitely different, and on hers she was able to select the keyboard. Can make changes to the lighting scheme - things of that nature. Mine on the other hand - nothing available. I called into support to ask for assistance. Verified I had all the latest updates installed, but still not getting anything to work. The most frustrating part is while on the phone I can clearly hear the support agent getting in/out of a car. Then saying to whomever they were with - give me a moment I am dealing with a   I just about snapped that new keyboard in half and put into the box to inform Dell where to    but I digress. So my question is there a compatibility issue with this keyboard, and the Alienware Aurora R7 due to the AWCC is older?
Aurora R7, AW510K mechanical keyboard