Mac Pro desktop computer CPU and Memory Processor Brand Intel Dual-Core Xeon 2.66 GHz 1 GB Bus Speed 1333 MHz Cache Size 8 MB Memory Technology DDR II SDRAM Maximum Memory 16 GB Number of Installed Processors 2 Maximum Number of Processors 2 Storage Included Drives DVD±RW (+R DL) 250 GB 32 X 24 X 24 X 16 X DVD Write Speed 16x (DVD±R), 6x (DVD+R DL) Drive Controllers Serial ATA Monitor and Graphics Video Integration Plug-in card Installed Video Memory 256 MB Display Type None. Communications and Networking Network Support Ethernet, Fast Ethernet, Gigabit Ethernet Connectors Interface Provided SPDIF input, SPDIF output, DVI-Analog/Digital, DVI-Analog/Digital (dual link), Ethernet 10Base-T/100Base-TX/1000Base-T Expansion Slot Types Provided Processor, Memory, PCI Express x16, PCI Express Chassis and Power Supply Chassis Style Tower Software Apple MacOS X 10.5 Included Software  iChat AV, Microsoft Office 2004 for Mac Test Drive, Dashboard, Spotlight, Apple Xode Developer Tools, iLifeí08, IWork í08 (Trial), Spaces, Quick Look, Time Machine, QuickTime, Mac OS X Mail, iCal, DVD Player, Address Book, Safari Warranty Base Warranty 3 year warranty  Warranty Information 3 year warranty  Dimensions and Weight Weight 42.3 lbs General Product Info Input Devices Mouse, Keyboard Also known as  Mac Pro, MA356LL/A, , App Mac Pro MA356LL/A Manufacturer Part No. MA356LL/A UPC 885909091843 Dimension 20.1 in x 8.1 in x 18.7 in (HxWxD)