The SK Hynix HMT451U6BFR8C-PB 4GB DDR3 1600MHz PC3-12800U Desktop RAM is a reliable and high-quality memory module designed for desktop computers. With a total capacity of 4GB and a bus speed of PC3-12800U, this RAM offers fast and efficient performance for various computing tasks. The unit quantity is 1, making it convenient for upgrading or replacing existing memory modules in desktop systems. Made by the trusted brand SK hynix, this DDR3 SDRAM module ensures compatibility and stability in your computer system.