Product specification: 1) Intel 915P2 +ICH6 chipset 2) 533/800MHz FSB bus frequency 3) Support Intel Pentium 4 Prescott Socket775 CPU & Celeron D Prescott Socket775 CPU 4) Support Pentium HT (Hyper-threading technology) CPU 5) One floppy port support format 360K/720K/1.2M/1.44M/2.88M disk driver 6) Support dual channel DDR400/333memory 7) Provides two 184 pin DDR slots, support up to 3.2GbpS (under DDR400 single channel), support up to 6.4Gbps (under DDR400 double channel) Note: 128MB DDR266 and 256MB DDR266 (double side) don't support on this Main board. Support AGP4X/8X graphics card 8) Support USB2.0, 8 USB available simultaneously 9) Support 4 SATA 10) Ports: a) 3 PCI; 1 PCI Express x16; 1PCI Express x1 b) Onboard AC' 97 2.2 specification compliant c) Support ATA66/100 HD interface 11) Technology: built-in Intel Graphics Media Accelerator 900