Does Qualcomm Atheros AR956x wireless network adapter not support 5ghz (dual) band?

I have an Acer E1-520 and I can't find my WiFi anymore. I did for a little while, but now it just doesn't appear on the list.

Can't find any information about this adapter online. Does anyone know whether this adapter supports dual band? Is this why I can't find it?

Shouldn't I be able to find the 2.4ghz band at least? Or do certain routers only run 5ghz?