Amd Athlon 64 3400+ 2.4/512/200/DVDM/XP Home/Lan/ MODEM/9N1 Card Reader Microsoft Windows XP Home pre-installed w/COA / AMD Athlon 64 3400+ processor (2.4 GHz) / 512 MB RAM (4 GB max) PC3200 / 200 GB hard drive DVDRW DL drive / No floppy drive / Integrated video / Integrated audio / Integrated Ethernet / 9-in-1 Card Reader Supported Media Cards: CompactFlash Card type I/II / Memory Stick / Memory Stick PRO / MicroDrive / MultiMediaCard / SD Memory Card / SmartMedia Card / xD-Picture Card Motherboard Expansion slots: Four (4) DIMM sockets / Three (3) PCI slots / One (1) PCI Express x16 slot Front I/O ports: Two (2) USB ports / Mic in / Headphone in / One (1) 4-pin IEEE 1394 FireWire port