Please note: This is Server Memory, Desktop PC cannot be used,X99 motherboard can be used.Application type: ServerMemory types: PC4 1Rx4 REG ECCMemory capacity: DDR4 8GBMemory frequency: 2133Mhz PC4-17000Memory voltage:1.2VPlease note:DDR4 type:PC4-17000 = DDR4 2133MHZPC4-19200 = DDR4 2400MHZPC4-21300 = DDR4 2666MHZPC4-22400 = DDR4 2800MHZPC4-24000 = DDR4 3000MHZPC4-26400 = DDR4 3300MHZPC4-26600 = DDR4 3333MHZDue to different batches, there may be differences in the appearance, color, and printing of the product, which will not affect its use.Colour:random color , don't accept the specified colorMaterial:PCBPackage Contents:1 x RAMOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.