If you’re trying to find the barcode on your power supply, it’s usually located on a sticker on the device. This sticker often contains other information as well, such as the model number, serial number, and technical specifications. The barcode itself is typically a series zebra, tsc, sato, godex of black lines and spaces of varying widths. If you’re having trouble finding it, try looking on all sides of the power supply, including the bottom. If you still can’t find it, you may want to consult the manual or contact the manufacturer’s customer service for assistance.