Updated: 04/26/2017 by Computer Hope

An expansion is a term that describes adding additional hardware to your computer. For example, an expansion may be adding a video card with more capabilities, a DVD drive, new hard drive for additional disk space, or a sound card.

Adding any new or device to a computer requires either connecting an external device to a port, installing an expansion card into an expansion slot, or adding a drive into an expansion bay.

Add-on, Hardware terms, Peripheral, Upgrade