Product serial numbers are usually found on a sticker label affixed to the bottom, back or inside of a device. The sticker can be identified by the bar code printed on it; the serial number is generally found above or below the bar code.
A serial number is a unique series of letters and numbers that is used to identify the make and model of a product. Most electronics and devices have serial numbers that are used in identifying parts for repair and troubleshooting common problems with the item. More information on locating the serial number on a specific device may be found on the device manufacturer's website.