You may have noticed that on every electrical appliance or device you buy, somewhere on that device or appliance there is a tag telling you the make and model number, serial number, and electrical characteristics such as amperage and voltage. Pictured is my computer's charger, among all of that information, the UL listed logo is circled in red. "UL Listed" means that Underwriters Laboratories has tested this product and found it to meet its safety standards. Underwriters Labo
