Hynix DDR3-1333 SODIMM 4GB/512Mx64 Hynix Chip Notebook Memory<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Cas CL11</li><li>Voltage 1.5</li><li>4GB Single Stick. Dual rank if bought in pairs.</li><li>204 pins</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41Un5QCEDdL.jpg" noproxy>