I5 Desktop Motherboard Set B75 Mainboard DDR3 Memory 4G Dual‑USB 3.0 SATA3 Computer Parts Item Type Motherboard Motherboard Chip Integrated chip sound card / network card nuclear display card Main chipset for B75 Network card chip integrated RTL8105E 100M network card Audio chip integrated 6-channel cudio chip Processor Pattern CPU Platform: For Core II and III CPU Socket: LGA 1155 Support: 1 CPU Memory Pattern Memory Type: DDR3 1600/1333/1066 MHZ Memory Slot 2 × DDR3 Expansion Slot 1 × PCI-E X16 graphics slot 1 x PCI-E X1 slot 1 x USB2.0 pin 1 x USB3.0 pin 4 x SATA2.0 interface + M.2 NVME hard disk interface I / O Interface 1 USB keyboard and mouse 1 x RJ45 network interface 1 x VGA interface 1 x High Definition Multimedia Interface HD output 2 x USB 2.0 interface 2 x USB3.0 interface Audio port Motherboard Size Approx. 17 x 19cm / 6.69 x 7.48in (outer box size: approx. 28 x 21 x 11cm / 11.02 x 8.27 x 4.33in) Weight without Box Approx. 0.5 kg / 1.1 lb Gross Weight Approx. 0.78 kg(the total weight of the set includes CPU fan memory) Other Parameters A 4-pin power socket and a 24-pin power interface Power Supply Mode: 3 phase Battery Model CR2023(Not included)