This is a set of eight 4GB DDR3 SDRAM memory modules, totaling 32GB in capacity. It is designed for Dell OptiPlex 5040 Small Form Factor computers. The memory features include Non-ECC Unbuffered with a voltage of 1.5v and a frequency of 1600MHz. It has a form factor of DIMM and a bus speed of PC3-12800 (DDR3-1600). The manufacturer offers a lifetime warranty.