4GB DDR3-1333 SODIMM FOR APPLE # MB1333/4G-AXAxiom Memory Axiom 4GB DDR3 1333 SODIMM for Apple MB1333 4G AX For Notebook, Desktop PC 4 GB DDR3 1333 PC3 10660 DDR3 SDRAM 1333 MHz 204 pin SoDIMM Lifetime Warranty VPN: MB1333 4G AX SKU: RSC344949 UPC: 845282057904 4 GB of memory to heighten your computer's performance Up to 1333 MHz memory speed for remarkable multitasking capability 204 pin pin DDR3 1333 PC3 10660 interface multiplexes 2 bit data from memory cell and I O buses to minimize