SEO friendly URLS is not a part of Power Store.
The reality is that mod rewrite is an Apache plugin, and Power Store can be run on both Windows and Linux servers using either Apache or IIS as the web server technology.
There is a similar plugin for IIS, but it works differently. one reason mod_rewrite was not added to Power Store was to not limit the sites it could be installed on.
Power Store uses a database to populate the catalog pages, that means that there is only one page that shows the categories, and it determines the categories based on a URL variable.
with mod rewrite and htaccess, you would have a rule that reads the url:
and interprets that as:
on the results page, you would have a recordset to filter the category based on the URL variable.