5ghz wifi connection to RBR40

Hello,

My laptop is connected to a Trendnet TEW-684UB adapter which is an older unit but is dual band 2.4ghz/5ghz.  I took my laptop to a couple of friend's homes who both had FiOS 1gb connections to their home.  One friend had a FiOs Quantum dual band router.  When I tried to wirelessly connect to it, I noticed that there were two possible connections, i.e., 2.4ghz and 5ghz.  I sat down about 25 feet away in his family room and first tried to connect wirelessly to the 2.4ghz and then initiated a speedtest.  I got about 35/35 speeds.  I then connected to the 5ghz, initiated another speedtest, and got 230/240 speeds.

I then went to my second friend's home and he's using an ASUS RT-68U dual band router.  Once again, sitting about 25 feet away in his living room, I tried to wirelessly connect to it.  In doing a search of available networks, I was able to see the ASUS router on my laptop and once again saw a 2.4 ghz and a 5ghz available connections.  I initiated a connection and a speedtest to the 2.4ghz connection and got 45/40 speeds.  I then did the same, but connected to the 5ghz and got 250/235 speeds.

So my question is why I don't I see two available connections to my Orbi like I did with my friends' FiOS Quantum and ASUS rourters?  Is there a setting in the Orbi that must be made so that the dual band connections are visible to my laptop and can allow me to connect to either the 2.4ghz or 5ghz?

Guidance and help would be much appreciated!