Specifications: CPU: Socket 754 for AMD Athlon™ 64/Sempron™ processor,High-performance Hyper Transport CPU interface, Support transfer rate of 1600/1200/800/400 mega-transfers per second. CHIPSET: VIA® K8M800& VT8237, North Bridge: VIA® K8M800, South Bridge: VIA® VT8237. GRAPHICS: Integrated S3 UniChrome Pro 2D/3D Graphics, Share memory : 64MB. MEMORY: 2 x 184-pin DDR DIMM socket support up to 2 GB, Support DDR400/333/266/200 DDR SDRAM. EXPANSION SLOT: 1 x AGP 8X/4X slot, 3 x PCI slots, STORAGE: Support by VIA® VT8237, 4 x Ultra DMA133/100/66 devices, 2 x Serial ATA devices, RAID0 & RAID1 configuration. AUDIO: Realtek ALC655 6-Channel audio CODEC, Compliant with AC'97 2.3 specification. LAN: VIA® VT6103L 10/100 Mbps Fast Ethernet PHY. REAR PANEL I/O: 1 x PS/2 keyboard & PS/2 mouse connectors, 4 x USB ports, 1 x RJ45 LAN connector, 1 x VGA port, 1 x Parallel port (LPT1), 1 x Serial port (COM1), 1 x Audio port (Line-in, Line-out, Mic-in). INTERNAL I/O CONNECTORS & HEADERS: 1 x 20-pin ATX Power Supply Connector & 4-pin 12V Connector, 1 x FDD connector supports two 360K~2.88MB FDDs, 2 x IDE connectors, 2 x Serial ATA connectors, 2 x USB 2.0 headers, support additional 4 USB Ports, 1 x Speaker header, 1 x SPDIF out header, 1 x Front panel switch/LED header, 1 x Front panel audio header, CD in/ AUX in headers, CPUFAN/CASFAN connectors. SYSTEM BIOS: Award BIOS with 4Mb Flash ROM, Supports Plug and Play 1.0A, APM 1.2, Multi Boot, DMI, Supports ACPI revision 1.0 specification. FORM FACTOR: Micro-ATX Size, 244mm*200mm. ECS K8M800-M2