An adapter is provided for use with a supply spool having first and second spool ends the spool having web media thereon. The adapter has a body having first and second body ends with each of the first and second body ends having shaped linkages to join to one of the first and second supply ends and with each body end further shaped to join to a printer receptacle when not joined to a spool end; and a data source. The body shaped to position the data source relative to the first body end so that when the first body end is joined to a first spool end, the data source is positioned to provide the machine readable data so that the machine readable data can be read by a reader in a printer that is adapted to accept a supply spool having web media that is axially located asymmetrically.