CompTIA A+ Core 1 (220-1201)Mobile DevicesEasy
A technician needs to upgrade the memory in a laptop. Which type of memory module is most commonly used in laptops instead of the full-size DIMMs found in desktops?
- ARDIMM
- BSIMM
- CSO-DIMM
- DECC UDIMM
Show answer & explanationAnswer & explanation
Correct answer: C. SO-DIMM
Laptops use SO-DIMMs (Small Outline Dual In-line Memory Modules) because their compact size fits the thinner form factor of mobile devices. Desktop systems typically use full-size DIMMs.
Why the other options are wrong
- A. RDIMMs (registered DIMMs) are used in high-end server systems.
- B. SIMMs are an obsolete memory standard from older desktop PCs.
- D. ECC UDIMMs are used in servers/workstations, not laptops.
SO-DIMM
A compact memory module format designed for laptops and other space-constrained devices.
- Smaller than standard DIMMs
- Common types: DDR3, DDR4, DDR5 SO-DIMM
- Installed at an angle then pressed flat to lock in
Memory trick: SO-DIMM: 'Small enough to fit in a Slim laptop'