Addon or setting

[Canapla]

Hi Everibody

 

I'm New to prestashop, I would like to know if there is an addon,  mod or a setting to have the possibility to add a link to a file (possibly stored on the server) the the people can download or view.

Example:

 

If I have an article on the shop, I would like to have like a scroll down menu or a link to some tecnical information on that article, so that people can download it and view it.

Something like instruction, schema or something like that.

There is someting that make my work?

 

Thanks to everybody