This software is for Mac systems which meet Tiger's requirements but have a CD-ROM drive instead of a DVD drive. This item never shipped in retail packaging. You will receive four Apple-original Tiger CDs. These are the universal installation CDs which will properly install Tiger on any Mac meeting the system requirements. Beware of others selling gray or silver CDs which say "iMac" or "eMac". Click here for more information. System Requirements: PowerPC G3, G4, or G5 processor Built-in FireWire At least 256MB of physical RAM A built-in display or a display connected to an Apple-supplied video card supported by your computer At least 3.0 GB of available space on your hard drive; 4GB of disk space if you install XCode 2 developer tools CD-ROM drive The Tiger manual can be downloaded in PDF form here. The Tiger Installation and Setup Guide can be downloaded in PDF form here. What is Expedited Processing? Find out here. Temporarily out of stock. $249.99 Options: ---Expedited Processing (+$2.99) Hardcore Mac sales@hardcoremac.com (520) 723-8702 - (520)-723-8704 fax