BIOS NLB75 INTEL® B75 Chipset Supports LGA1155 Sandy Bridge & IVY Bridge Intel Core processor family Support Dual Channel DDR3 1600/1333/1066 Integrated HD Audio CODEC with 6CH Support PCI-Express 2.0 Support 2*PCI Express Gigabit LAN Support 5*PCI Slots Support 10*COM ports Support 3*SATA2.0 & 1*SATA3.0 Support 4*USB3.0 Support 6*USB2.0 Onboard 1*MiniPCI-E connector 4 Phase CPU Power Support Support Thunder Protection Function ATX Form Factor(220mm X305mm)