A serial number is a unique combination of numbers or letters given to something, like a product or asset, to identify it individually from others of its kind. Full definition
Write down all the items you own, along with serial numbers of electronics, computer equipment and other valuables. (trustedchoice.com)
In addition to listing or photographing your belongings, include details like serial numbers on electronics, makes and models, and year of purchase, suggests the III. (allstate.com)
Then, make a list of valuable items and things with serial numbers in that room. (effectivecoverage.com)