Please note:Only For . This memory does not fit ECC Server. Memory chip:16 IC Type: DDR3 Desktop Function: Non-ECC Memory Socket: Dimm Frequency:PC3 12800/1600MHz Number of Pins: 240pins Capacity: 4GB Voltage: 1.5V Unbuffered, Non-ECC, & Non-Registered DDR3 1066=PC3-8500 DDR3 1333=PC3-10600 DDR3 1600=PC3-12800 Pins of Memory Ram DDR for Desktop =184 pins DDR for Laptop =200 pins DDR2 for Desktop =240 pins DDR2 for Laptop =200 pins DDR3 for Desktop =240 pins DDR3 for Laptop =204 pins Due to different batches, the appearance, color and printed words of the product , which not affect the use. Colour: random color , don't accept the specified color Material:PCB Package Contents: 1 x RAM Only 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.