The Hynix 4GB (2x2GB) DDR3 PC3-10600U 240-Pin DIMM Unbuffered memory module set consists of two 2GB modules with a total capacity of 4GB. These DIMM modules have a form factor of DDR3 SDRAM and a bus speed of PC3-10600U. The manufacturer warranty for this product is lifetime, providing a reliable and long-lasting solution for your computer's memory needs. With the brand reputation of Hynix and the specific model number HMT325U6BFR8C-H9, these memory modules are designed for high performance and durability in various computer systems.