Patriot Mac Series 8GB Apple SODIMM Kit (2X4GB) DDR3 1333 PC3 10600 204-Pin SO-DIMM PSA38G1333SK PC3-10600 (1333MHz) Data Rate 204-Pin Dual in-line memory module 8GB (2 x 4GB) Non-ECC Unbuffered SODIMM Kit 2 Rank Double-sided module 7.8US Refresh Interval (8192 CYCLES/64MS) 1.5V Power Requirement Auto and self refresh capability PCB height: 1181(mil)