TX2 Can not find 5G Wifi

My TP-link router have two wifi signal(TP-LINK_2.4G_9605 and TP-LINK_5G_9605)

But TX2 only list wifi signal “TP-LINK_2.4G_9605”

Are there any Guide to figure out the probelm?

Some of the bandwidth is not detected by the TX2 wifi. Do you know which 5G channel your router is using?