Please note: This is Server Memory, Desktop PC cannot be used,X99 motherboard can be used.Application type: ServerMemory types: PC4 2Rx4 REG ECCMemory capacity: DDR4 16GBMemory 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.Material: PCBcolour: random colorNote: randomly colored. Cannot be chosen the specific color.Package 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.