This Extra Field Type is available in Profile Builder 2.0, Hobbyist or Pro.
You can use this extra field type to allow users to upload files.
You can specify the field title, meta-name to be stored in the database, description and allowed upload extensions.
You can opt for using a simple upload field instead of the WordPress one.
Also, you can set whether this field should be required or not.
This is how it looks like in the front-end.