Hi All, I am new here,I have Dell Vostro 3546 (Vostro 15 3000 Series) laptop,its preloaded with 4 GB Ram and i Want to upgrade it to 8 GB,only one slot is there so i need to buy 8 GB RAM,on dell website it is mentioned that it is compatible with upto 8 GB DDR 3 L 1600Mhz RAM. Please let me know...