Simmtronics 4GB DDR3 Laptop RAM 1600 MHz (PC 12800) with 3 Year Warranty : Amazon.in: Toys & Games
A-Tech 4GB RAM for Apple MacBook Pro (Early/Late 2011), iMac (Mid 2010, Mid 2011, Late 2011), Mac Mini (Mid 2011) | DDR3 1333MHz PC3-10600 204-Pin SODIMM Memory Upgrade Module at Amazon.com