Recommended:

1, key DDR3 1600 4G notebook memory ￥ 189.

2、

Xiandan South Asia Yisheng DDR3 1600 4G notebook memory 189

The following is a Samsung memory granule:

Mirage Mirage Gold Bar DDR3 1600 4G Notebook Memory (KMD3S 1600V4g) 2 19