Low fever: 1.2V working voltage, lower power consumption, keep working at low temperature, and run more stable. Total Capacity:4GB Speed: DDR4 2133MHz (PC4-17000) Number of Pins: 288 pins Type: Server Memory Voltage: DDR4 1.2V Color: green Material: PCB DDR4 type: PC4-17000 = DDR4 2133MHZ PC4-19200 = DDR4 2400MHZ PC4-21300 = DDR4 2666MHZ PC4-22400 = DDR4 2800MHZ PC4-24000 = DDR4 3000MHZ PC4-26400 = DDR4 3300MHZ PC4-26600 = DDR4 3333MHZ Please note: Different batches, product appearance and color may be different, does not affect the use Package Contents: 1 x RAM Only the above package content, other products are not included. Note: Light 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.