Patriot Signature 4GB DDR3 PC3-10600 CL9 SODIMM Memory PSD34G133382S PC3-10600 (1333MHz) Data Rate 204-Pin Dual in-line memory module Non-ECC Unbuffered 2 Rank Module 7.8US Refresh Interval (8192 CYCLES/64MS) 1.5V Power Requirement Auto and self refresh capability PCB height: 1181(mil)