New stereo

I have a new stereo and i am trying to figure out how to remove the stock one that is in the car already.. it doesn't wanna pop out like the one in my old car.. and i don't want to break.. it.. anyone who has a thought please let me know.

I don't personally know how to remove stereos from Kia's, but there is a site I've used to figure out how to remove my stereo. It's http://www.carstereoremoval.com Hope this helps.