The product is a lot of 16GB PC3 and PC3L RAM modules from various brands including Samsung, Riverbed, and Micron. These DDR3 SDRAM modules have a form factor of RDIMM and a bus speed of PC3L-10600R. They are designed for high performance and reliability, with features such as ECC memory and registered design. Making it suitable for a variety of server applications requiring large amounts of memory.Lot Includes the followingRiverbed 16gb PC3L-12800 (x4)Riverbed 16gb PC3-12800 (x12)Samsung 16gb 2rx4 PC3-12800r (x6)Micron 16gb 2rx4 PC3-14900r (x1)Samsung 16gb 2rx4 PC3L-10600r (x11)