The SK Hynix 4GB DDR4 SDRAM Computer Laptop Memory is a high-quality SO-DIMM memory module designed for computers and laptops. With a total capacity of 4GB and ECC memory features, this module provides reliable performance for your computing needs. Manufactured by SK hynix, this DDR4 SDRAM memory module has a lifetime warranty and operates at a fast bus speed of PC4-17000 (DDR4-2133). With its compact form factor and one module design, this memory unit is a practical choice for enhancing the performance of your device.