Full Details from Amazon.com : http://www.amazon.com/gp/product/B005JRH9TE?tag=onigi-20<br /><br />Corsair Apple Certified 4GB (1x4GB) DDR3 1333 MHz (PC3 10666) Laptop Memory (CMSA4GX3M1A1333C9)<br /><br />Capacity 1 x 4GB <br />Speed 1333MHz CL9 <br />Timing 9-9-9-24 1333 MHz <br />Pin Out 204 Pin <br />Voltage 15V <br />Latency CAS 9
