#sigh pic.twitter.com/kZLqpFvO6o— Scott McDermott (@scottm32768) January 9, 2015 Yay, 40MHz Xfinity, in 2.4GHz, FTW. :-( Don’t do this. 40MHz is for 5GHz only. Unless, you know, you live in a cave, or a farm, or it’s the Zombie Apocolypse and there are no other WLANs around. THEN you can use it.