Attention: Please talk to the set up directions in the main photograph 1 insert the correct yellow pin into the entrance USB. Incorrect insertion can cause it not to start. 2 RAM must establish in slot slot(grey slot)priority. Our motherboard set involves motherboard, 1*CPU and 2* 16GBRam. CPU: Processor Series: Xeon E5 2680V4 (14 cores/28 threads) Main frequency: 2 Socket type: LGA 2011-3 third point cache: 35MB Technology: 14nm Power consumption: 120W Memory:QIYIDA Chip: SEC / HY/ MIC and others (ship at random) Type: REG ECC Frequency: DDR4 2133MHz Capacity: 32GB (2PCS*16GB) Motherboard: Model: Qiyida X99 D4 Chipset:X99C612 Condition: Full new CPU socket: LGA 2011-3 Structure: M-ATX 215*190MM VGA socket: PCI-E X sixteen Power port: 24Pin+8pin CPU supported:Support 2011-3 All-series CPU( Include V3, V4 series) Memory socket: 4* DDR4 Max reminiscence capacity: 4* 16G DDR4 2133/2400MHz/2666MHz/3200MHz Memory form supported: non-ecc/reg ecc/ecc Integrated video card: No Notice for motherboard combine RAM ALL RAM must set up in slot slot(grey slot)priority when 1RAM+motherbard (ram should set up slot .) when 2RAM+motherbard (ram must set up slot .) when 3RAM+motherbard (ram needs to establish slot .) when 4RAM+motherbard (install all slots) The black ram slot of motherboard can't works alone. Attention: Please insert the proper yellow pin into the doorway USB. Incorrect insertion could cause it not to start.