AUX button

[xCookiE]

hey guys,
i've seen a few pictures of interior yaris where they have this AUX button located in the middle under the e-brake..
i've asked the dealerships here for it but they don't know what i'm talking bout..

i was wonder if it is a Toyota part? or something you picked up somewhere?
if its a Toyota part, would you mind telling me what is the part number??

it would be really helpful..

thanks!
Robert