Most notebooks come with either a basic trackball or touchpad. However, some users might not find them comfortable to use. Different types of pointers, such as scrolling or programmable mouse buttons, can be hooked up to notebooks, and a standard mouse can usually be attached to a port. The Graphics, They are a Changin' Users of early notebook computers got very little in the way of sound and graphics. That has changed.
Most machines now add a slot for an internal CD-ROM or, more recently, a DVD drive.
CD-ROM drives have become such common peripherals that they are now standard equipment. But the trend is toward notebooks equipped with DVD drives and removable media-storage devices. However, DVDs may not become common for a few years yet. DVD drives can increase a notebook's power drain by as much as 20 percent. In addition, DVD capability may be wasted when viewed on a small or low-quality screen.