Features: Perfect match: According to the original model design, perfect replacement installation, high-quality components,Support for LGA 2011-3 DDR3DDR4 E5 2678 V3V4 memory. Quick start, loading and file transfer. Low power consumption, quiet, reliable and durable. Durable material: This product is made of high-quality material, durable, long service for time, firm and stable in use. Compact and portable: being so mini and light-weight, this product does not take much space and can be easily taken away. Meticulous workman: The meticulous design, perfect in workman, durable and long service for time. Specifications: Name: X99 Motherboard CPU socket: LGA 2011-3 DDR3DDR4 Processors Frequency: DDR3 1066/1333/1600/1866 MHz DDR4 2133/2400/2666/3000/3200 MHz Max memory supported: 64G Memory socket: 2x 240pin DDR3;2x 288pin DDR4 Expansion slot: 1PCI-E X16 graphics slot 1PCI-E X1 graphics slot 1x Front Audio port 1x Front USB3.02x SATA2.0 port 2x SATA3.0 port 1x8p square power port 1x24p square power port 2xDDR3 2xDDR4 I/O port: 1Gigabit Ethernet 1xAudio interface 4xUSB2.0 pins 4xUSB3.0 pins 1xPS/2 port Motherboard dimension: approx. 233x183mm/9.17x7.20in Note: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item,Thanks for your understanding. Package includes: 1PC x Motherboard