I searched the forum a lil but but have a question. For some reason I don't think I have the USB port on my 2010 4r sr5. I believe I only have the 3.5 mm jack underneath the radio in that hidden compartment. If so, what piece do I need to play my iPhone out of my speakers through the 3.5mm jack? I really hoping I have the USB. I'll have to check when I get home. I am almost positive I don't unless all sr5's do!! Do they??