hello, i am using Asus K52JT laptop, and as i check my ram spec with CPU z , the result is : In SPD section it says it has 4 slots, and the slot number 1 , 3 is used with 2, 2GB Ram, DDR3 PC3-10700 (667mhZ) Elpida But when i Check the asus site for Ram Specification it is : DDR3 1066 MHz SDRAM, 2 x SO-DIMM socket for expansion up to 8 G SDRAM Please help me what types of ram i should use and what should i do for upgrading my Laptop Ram. thank you in advance.