Do I need to buy “dual band” router to enjoy this function? (They are so expensive compared to high speed high power 300mbps single band router).
A few months ago, I upgraded my Linksys wireless-G router to an ASUS RT-N66U, wireless-N, not because I was having trouble with my WD player at the G speeds, but because I wanted a gigabit wired speed, and to use the 5G wireless connection speed of the dual-band ASUS for streaming video to my iPad. All works great.
It doesn’t appear from your comments you are using a WDTV player right now. If so, try it with your current router. If you experience problems, come back to this thread and we can pick up the conversation then.