I had 2 external drives connected to it and the 3 bands were convenient when sharing via your own network.

Remember that a 2.4ghz band will reach further but will be slower, while a 5ghz band will be significantly faster while not reaching as far

The 3 bands of wireless signal are great, it consists of 1, 2.4ghz network, and 2, 5ghz networks, so that you can assign wireless