What expansion bus interface will you find on a laptop?

Published on January 15th, 2010 at 8:00 am

Last modified on August 13th, 2012 at 3:54 pm



Laptops provide very limited access to the internal expansion bus on the motherboard, so the industry has created specialized expansion bus interfaces that can be accessed from the outside. Which of these interface descriptions would NOT be found on the outside of a portable device?

A) PCMCIA

B) CardBus

C) PCI Express

D) ExpressCard


The answer: C) PCI Express

Although ExpressCard uses a PCI Express x1 lane as communication, the ExpressCard interface is specifically designed to have a small form-factor (as small as 34mm wide) instead of the larger desktop-based expansion bus interfaces.

Want to know more? Watch “Laptop and Portable Technologies.”

Although laptop and portable devices often provide similar functionality to desktop PCs, there are some important differences to consider for the CompTIA A+ exam requirements. In this video we’ll discuss some of these differences such as form factors, expansion slots, input devices, and power.

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Category: CompTIA A+ Pop Quizzes

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