2011 Prius Non JBL Sat/AM Button

Best I can tell I do not have Sat radio, antenna looks like it may have the tuner built in...
Anyone know what the deal is with this setup?
I’m getting ready to put in an alpine ilx650, amp, speakers, sub, the whole nine yards! Hoping there’s a connection behind the old head unit not in service...
I’m running a backup camera, so figure maybe it’s best to run a new satellite antenna anyway, haven’t heard good things about the old antenna!