What are the two major different types of memory modules commonly found in Lenovo systems?

In Lenovo systems, the two primary types of memory modules are DIMMs (Dual Inline Memory Modules) and SO-DIMMs (Small Outline DIMMs). DIMMs are typically used in desktop computers, featuring a larger form factor, while SO-DIMMs are designed for laptops and compact systems due to their smaller size. These memory modules are crucial for providing the system with the necessary memory to perform tasks, and understanding the difference between them helps technicians know which type to install based on the device being serviced.

While the other options mention various types of memory or technologies associated with memory, they do not accurately describe the two major types of modules commonly used, which are specifically DIMMs and SO-DIMMs. For instance, DDR refers to a technology within memory but does not specify the form factor of the modules, while DRAM and SRAM are types of memory technologies rather than types of modules themselves. This distinction reinforces why the identification of DIMMs and SO-DIMMs is crucial for any service technician working with Lenovo hardware.