As I understand it, the superhub is dual band, and can operate at either 2.4GHz OR 5Ghz, but not both together.

A couple of days ago, I had a problem with the wi-fi on my Dell laptop continually cycling in and out. Dell support did a remote access fix (from India). In doing so, the tech guy accessed the router, and said he'd solved the problem. Certainly my laptop's wi-fi was working again.

That was fine, until this morning, when I tried to print a letter, and found my Canon MP640 printer wouldn't work. I tried everything I could think of, including a full, fresh instal. The printer will not "connect" to the router.

I suspect that the "man from Dell" has switched frequencies (laptop also has dual band), without telling me. Presumably, my printer won't run with 5GHz.

One thing I do note is that the bottom (of three) lights on my superhub, I think, used to be GREEN, but is now BLUE. I don't know if that is significant.

Does anyone know how I can actually check the wi-fi frequency, before I scream at Dell for changing it, without asking me (if that's what they've done)?

Many thanks.