Socket LGA 775 Supports Pentium D/Pentium 4 Processor Supports FSB 533/800MHz Support Intel Hyper-Threading Technology  Chipset Intel 915GL / ICH6  MAIN           MEMORY Support Dual Channel DDR 333/400 MHz 4 x DDR DIMM Memory Slot Max. Supports up to 4GB Memory   EXPANSION SLOT 2 x PCI Slots 1 x PCI-E x16 Slot   LAN Realtek RTL8100C – 10/100 Controller   INTEGRATED VIDEO Intel Graphics Media Accelerator 900 Graphics   CODEC Realtek ALC655 6-Channel AC97 Audio   REAR I/O 1 x PS/2 Mouse 1 x PS/2 Keyboard 4 x USB 2.0 Port 1 x COM Port 1 x Printer Port 1 x VGA Port 1 x RJ-45 Port 3 x Audio Connector   INTERNAL I/O 2 x USB 2.0 Header 4 x SATA Connector 1 x IDE Connector  1 x Floppy Connector 1 x CD-IN Header 1 x S/PDIF-OUT Header   DIMENSION Micro ATX Form Factor Dimension: 24.4cm X 24.4cm ( W x L )   OS SUPPORT Support Windows 2000 / XP / XP 64   ACCESSORIES 1 x IDE Cable 1 x FDD Cable 1 x I/O Shield 1 x CD Driver 1 x User Manual