As the others have said it does both - but they do have the same ssid's and the Hub does "channel optimisation" by default. If you are experiencing any wifi network issues it would be worth doing this as a "test" - if it doesnt help or you prefer it as it was you can put it back by pinhole resetting the Hub. Go into the Hub3 settings and in smart wifi disable the "channel optimisation". Then, in advanced>wireless>security, rename the 2.4 & 5 GHz network ssid's (just change 'em to xxxxx2 & xxxxx5) with (the same) password you like, save settings and restart Hub. Over wifi you can then select the network that you want each device to connect to, individually.
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