To convert PST to Windows, you'll need the eSoftTools PST to MBOX Converter Software. Emails, contacts, calendars, and attachments are exported as MBOX files from PST files. This programme is compatible with Windows 10, 8.1, 8, 7, Vista, XP, and all prior Windows versions (32-bit & 64-bit). There is a trial version available. In the free trial version, you can convert 25 items from each folder.
For more info:- Convert PST to MBOX Windows