Gigablast Panoramic Modem question.

I've had Gigablast for a few months now. I'm thinking of getting a smart vacuum for my home, and I see that most wifi vacuums only support 2.4ghz wifi. I noticed with my previous internet provider that I have two different wifi connections - 2.4ghz and 5. I currently do not have that. Does the DTC4141 support both 2.4 and 5ghz? How can I connect to the 2.4?