# Requirements and compatibility
In order to work, XT-K2 Link Item (opens new window) requires the following server software environment:
- Joomla! 2.5+ / Joomla! 3+, or superior. Please, download the latest version at Joomla! (opens new window).
- K2 2.6.7, or superior at https://getk2.org/ (opens new window)
- PHP 5.3+, or superior - General-purpose server-side scripting language for web development and a popular open-source database system.
- MySQL 5.5+, or superior (recommended).