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

The two major types of memory modules found in Lenovo systems are DIMMs (Dual Inline Memory Modules) and SO-DIMMs (Small Outline DIMMs). DIMMs are typically utilized in desktop computers and servers, featuring a larger form factor that allows for more memory capacity and a higher number of memory chips. In contrast, SO-DIMMs are designed for laptops and compact devices due to their smaller size. This distinct difference in form factor makes them suitable for various applications, from powerful desktop environments to space-constrained portable systems.

Other options mention types of memory technology or specific memory types, but they do not represent the module form factors used in Lenovo systems. For instance, SRAM (Static Random Access Memory) and DRAM (Dynamic Random Access Memory) refer to different types of memory technologies rather than the physical module types. DDR (Double Data Rate) and SDRAM (Synchronous Dynamic Random Access Memory) are specifications for types of DRAM and do not specifically denote the module forms. Flash and EEPROM are types of non-volatile memory, hence unrelated to the context of memory modules primarily used in Lenovo systems.