On behalf of Mr. Dereke. My name is Puchong Suthorn, Presales Engineer. I got assigned from him to test Transparent Showcase and coordinate with you. So after I have to tested this product, I do not know how to add more advertise media files to display on it (also checked inside all the menu as well). Kindly provide us for the user manual or installation manual. Please feel free to let us know if you have any information regarding this. Thank you in advance.