All modules are tested prior to shipping to ensure no errors. Serial numbers are recorded for seller protection. The SK hynix 32GB DDR4 SDRAM DIMM is a high-performance memory module designed for computers. With a total capacity of 32GB and a bus speed of PC4-3200AA, this DIMM module provides fast and efficient data processing. The module, with 288 pins, is a single 32GB module that is ideal for upgrading or replacing memory modules in your computer for improved performance and multitasking capabilities.