The product is a lot of 45 Crucial CT51264BD160B.M16FKD 4GB DDR3L-1600 UDIMM 1.35V CL11 memory modules. Each module has a capacity of 4GB, with a total capacity of 16GB for the lot. The memory modules are designed for desktop computers, with a bus speed of PC3-12800 (DDR3-1600) and a form factor of UDIMM. Ideal for upgrading or replacing existing memory modules in a computer system, the Crucial DDR3L memory modules provide reliable performance and stability for various computing tasks. All were pulled from working desktops.