Blank slot cover

Updated: 04/26/2017 by Computer Hope

Blank slot expansion coverSometimes called an expansion slot cover, a blank slot cover is a thin piece of metal that covers an opening in the back of a computer case where an unused expansion slot is located. The cover protects the inside of the case from foreign objects, maintains proper air flow, and eliminates electrical interference. When installing a new expansion card, the blank slot cover must be removed first. The picture is an example of a blank slot cover, next to two expansion cards.

Tip: With screwless cases, you may not have a screw to secure each blank slot cover in place. Instead, the blank slot covers are held in place with one thumb screw attached to a metal holder that can be removed after the thumb screw is removed.

Chassis, Hardware terms