Ok, I've looked through the forum here, but haven't found quite what I'm looking for. I wanted to see if it was possible to add a Metabox to all custom post types without the need to setup an array? Or, maybe just the CPTs created using Custom Post Types UI plugin?
Here's the code I'm testing, but it only shows up on regular Posts.
add_meta_box( 'my-meta-box-id2', 'Enter your PDF location for your post category below:', 'cd2_meta_box_cb', 'post', 'normal', 'high' );