Absolute Beginner's Guide to A+ Certification

Memory

Portable systems need extra memory as much as desktop systems do, but portable memory is both more expensive and less versatile than memory for desktop systems.

Generally, portable systems have only one connector for additional memory. Older portable systems might use proprietary memory modules, whereas recent systems use SODIMMs (a reduced-size version of an SDRAM or DDR DIMM module).

Portable Memory Module Types

The best memory upgrade for a portable system is to add the largest memory module (in MB) that can be installed in the system. Because a future memory upgrade would require the removal of the original memory module on systems with a single memory upgrade socket, it's best to add all the memory a system can take from the beginning. ...