How do I get a win7 computer file to display the suffix format?

How do I get a win7 computer file to display the suffix format?

1. First, we return to the desktop interface of the Win7 computer, and then locate the computer icon and double-click to enter.

2. In the Open Explorer interface, let's click the organization-file and search options in the upper window so that you can open the Folder Options window.

3. In the Open Folder Options window, we switch the interface to the General column, and then locate the Navigation pane below, check all folders, and then click OK to exit the window.