This Apple Mac OS X Leopard Version 10.5.1 Install DVD Software Disk is a must-have for Apple Mac OS X 10.5 and Leopard operating systems. The DVD is formatted in English and is a retail version, packaged in a unit with no custom bundle. This operating system is compatible with MAC and requires a minimum processor speed of 1 GHz. The package contains a single device and comes with no manufacturer warranty. It is a software that you can use for your Apple computer, and it's suitable for personal and professional use.