Low fever: 1.2V working voltage, lower power consumption, keep working at low temperature, and run more stable.Total Capacity:4GBSpeed: DDR4 2133MHz (PC4-17000)Number of Pins: 288 pinsType: Server MemoryVoltage: DDR4 1.2VDDR4 type:PC4-17000 = DDR4 2133MHZPC4-19200 = DDR4 2400MHZPC4-21300 = DDR4 2666MHZPC4-22400 = DDR4 2800MHZPC4-24000 = DDR4 3000MHZPC4-26400 = DDR4 3300MHZPC4-26600 = DDR4 3333MHZPlease note: Different batches, product appearance and color may be different, does not affect the use.Colour: greenMaterial: PCBSize: 13.3x3cmPackage Contents:1 * RAM2 * Cooling Vest (the appearance and color are random, don't accept the specified appearance and color)2 * Sticker (the appearance and color are random, don't accept the specified appearance and color)Only the above package content, other products are not included.Note: Light shooting 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.