1.8 GHz PowerPC G5 processor 512 KB Level 2 "on-chip" cache 900-MHz "frontside" bus 512 MB PC3200 (400-MH2) DDR SDRAM; eight DIMM slots for expansion up to 8 GB NVIDIA GeForce FX 5200 Ultra Video Card with 64 MB DDR SDRAM and dual display support ADC and DVI connector; including DVI to VGA adapter 160 GB 7200 rpm Serial ATA hard drive*; two 3.5-inch expansion bays for hard drive units (one free) SuperDrive (DVD-R/CD-RW drive) Four expansion slots (one AGP 8x Pro slot with installed graphics card, one free 64-bit, 133-MHz PCI-X slot and two free 64-bit, 100-MHz PC-X slots) One FireWire 800 port; two FireWire 400 ports; three USB 2.0 ports; two USB 11 ports (on the keyboard) Optical digital sound input, optical digital sound output, analog sound input, analog sound output, mini jack for headphones and speaker on the front Built-in 10/100/1000BASE-T Ethernet port and 56K V.92 modem Prepared for AirPort Extreme wireless network connection* Included software: Mac OS ) and other software Apple Keyboard and Apple Mouse ENERGY STAR compliant 1 Maximum 999 MB per application in the Mac OS 2 1'GB is equal to 1 billion bytes. The actual capacity of the formatted schiff is lower The actual modem speed is lower. Suitable internet provider and compatible telephone network required. Some ISPs do not support all V.92 features. The modem functions according to the V90 standard if required V.92 services available meaning. Wireless Internet access requires an AirPort Extreme Card, an AirPon Extreme Base Station or AirPort Base Station, and an Internet account (fees may apply). Certain internet providers are currently not suitable for using AirPort or AirPort Extreme