I have a new Inspiron 17, 5000 Series and it came with only 2.4 Band Wi-Fi, not the dual band. I can hardly believe it. Everything I have ever gotten from Dell has had the dual band, including my tablet. I have a dual band router but cannot utilize it for my laptop. My laptop is so slow. There is also interference from my next door neighbors big, bad computer setup he has for his company. Why do I only have 2.4 and how do I correct this problem?
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