BIOSTAR G41D3C - Intel G41(Core2 Quad/Core2 Duo/ Pentium Dual-Core/ Celeron Dual-Core/ Celeron D Processor/ Celeron Processor 400 Sequence. Dual Channel DDR3 1333(OC)/ 1066/800 MHz.2 x DDR3 DIMM Memory Slot.1 PCI; 1 PCI-E x1 ;1 PCI-E x16; 1IDE; 4USB 2.0