Printers (The two HP and Samsung) Try to look for the bar code stickers on the printer.The Serial selection on the Samsung printer can be used where ever an HP serial selection is requested. Samsung printers consult with a 'product or service selection' for a 'design code' specified with 'M/C', http://businesssolutions18529.tblogz.com/the-best-side-of-business-solutions-12134743