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Hello! Tried installing Sierra 10.12.6 on my Dell Inspiron 7447. From what I see, Wi-Fi (on an Intel Wireless AC 3180 card) and Audio (WavesMaxx Pro) is not working. Here are other details on the specs: Processor: Intel Core i7 4710HQ 2.5GHz Quad-Core, 6MB Cache, Turbo Boost up to 3.5GHz...