The A-Tech 16GB DDR3 1600MHz PC3-12800 CL11 DIMM 2Rx8 1.5V 240-Pin Non-EC RAM kit includes two 8GB modules, providing a total of 16GB of memory for your computer. Manufactured in the United States by A-Tech, this DDR3 RAM is designed for high performance and reliability. With a voltage of 1.5V and a memory speed of 1600MHz, this RAM is compatible with a wide range of computers and laptops, making it a practical choice for upgrading your system's memory capacity.