Shipping weight: 3lbs. Product Specs DVD-DISK Includes 2 DVD's of Mac OS X 10.4 Tiger Includes Mac OS 9.2 on disk 2 Upgrades to newer Tiger updates are available by going to software update in your Apple menu after you install for free. Once you install 10.4, you can update to the newest version of Tiger (10.4.11) for FREE at apple.com.