Gigabyte Intel Z68 ATX DDR3 2133 LGA 1155 Motherboard GA-Z68A-D3H-B3 Storage Interface: Chipset: 2 x SATA 6Gb/s connectors, 4 x SATA 3Gb/s connectors, Support for SATA RAID 0, RAID 1, RAID 5, and RAID 10 Expansion Slots:1 x PCI Express x16 slot, running at x16. 1 x PCI Express x16 slot, running at x8. 1 x PCI Express x16 slot, running at x4 . 2 x PCI Express x1 slots. 2 x PCI slots. Support for ATI CrossFireX/NVIDIA SLI technology. Memory: 4 x 1.5V DDR3 DIMM sockets supporting up to 32 GB of system memory, Dual channel memory architecture, Support for DDR3 2133/1866/1600/1333/1066 MHz memory modules CPU: Intel Core i7/i5/i3 processors, Intel Pentium processors, Intel Celeron processors in the LGA1155 package . Chipset: Intel Z68 Express Chipset Audio: Realtek ALC889 codec, High Definition Audio, 2/4/5.1/7.1-channel, Support for S/PDIF Out. LAN: 1 x Realtek RTL8111E chip (10/100/1000 Mbit) CPU: Intel Core i7/i5/i3 processors, Intel Pentium processors, Intel Celeron processors in the LGA1155 package . Chipset: Intel Z68 Express Chipset Memory: 4 x 1.5V DDR3 DIMM sockets supporting up to 32 GB of system memory, Dual channel memory architecture, Support for DDR3 2133/1866/1600/1333/1066 MHz memory modules Audio: Realtek ALC889 codec, High Definition Audio, 2/4/5.1/7.1-channel, Support for S/PDIF Out. LAN: 1 x Realtek RTL8111E chip (10/100/1000 Mbit) Expansion Slots:1 x PCI Express x16 slot, running at x16. 1 x PCI Express x16 slot, running at x8. 1 x PCI Express x16 slot, running at x4 . 2 x PCI Express x1 slots. 2 x PCI slots. Support for ATI CrossFireX/NVIDIA SLI technology. Storage Interface: Chipset: 2 x SATA 6Gb/s connectors, 4 x SATA 3Gb/s connectors, Support for SATA RAID 0, RAID 1, RAID 5, and RAID 10 USB: Chipset: Up to 12 USB 2.0/1.1 ports. Etron EJ168 chip: Up to 2 USB 3.0/2.0 ports on the back panel Internal I/O Connectors:1 x 24-pin ATX main power connector/1 x 4-pin ATX 12V power connector/2 x SATA 6Gb/s connectors/4 x SATA 3Gb/s connectors/1 x CPU fan header/2 x system fan headers/1 x power fan header/1 x front panel header/1 x front panel audio header/1 x S/PDIF Out header/4 x USB 2.0/1.1 headers/1 x serial port header/1 x clearing CMOS jumper/1 x Trusted Platform Module (TPM) header Back Panel Connectors:1 x PS/2 keyboard/mouse port/1 x D-Sub port/1 x DVI-D port/1 x HDMI port/1 x optical S/PDIF Out connector/4 x USB 2.0/1.1 ports/2 x USB 3.0/2.0 ports/1 x RJ-45 port/3 x audio jacks (Line In/Line Out/Microphone)