The Samsung M471A2K43DB1-CTD (16GB) is a DDR4 SDRAM memory module with a capacity of 16GB per module. It has a form factor of SO-DIMM and a total capacity of 16GB. This unit is designed for use in computers that support DDR4 memory technology and has a bus speed of PC4-21300 (DDR4-2666). Additionally, it features ECC memory, making it suitable for systems requiring error correction. The product is manufactured in the Philippines by Samsung and is sold as a single module.