The Hynix 2GB PC3L-12800S DDR3 memory module is designed for Apple laptops and has a total capacity of 2GB divided into one module. This DDR3 SDRAM memory module features a 204 pin form factor with a bus speed of PC3-12800 (DDR3-1600). It supports ECC memory features, ensuring reliable performance for your computer system. The model number for this memory module is HMT425S6AFR6A-PB, providing a high-quality and compatible memory upgrade option for your laptop.