Where can I find my Brother printer's serial number?

When entering your printer's serial number:

If your serial number consists of 9 characters, enter the complete number.
If your serial number consists of 15 characters, enter the last 9 characters. If there is a hyphen (-), enter the 9 characters that follow it.
Example:
For "E00000 - A1B23C456" enter "A1B23C456".
Make sure you enter upper-case letters only.

The serial number (SER.NO.) is located on a label attached on the back / bottom of the printer, or inside the printer’s label roll / tape cassette compartment.

Examples:

Label Printer (QL, TD, TJ, etc.)

P-touch (PT, etc.)
Color Label Printer (VC)
Mobile Printer (PJ, RJ, MW, etc.)

FAQs & Troubleshooting

Where can I find my Brother printer's serial number?