Chapter 1 Product Overview Ferrite Core If a ferrite core is included in the product package, use the ferrite core when connecting the product with TM- m30II or TM-T88VII. U "Connecting to the Printer" on page 12 If the last six digits of the product serial number is 001001 or later, the ferrite core is not included. If so, you do not need to use the ferrite core. SERIAL No. xxxx001001 10