How long does a toner cartridge last in the HL-B2080Dw?
The TN-B021 or TN-B022 toner cartridge (depending on your region) has an approximate life of 2,600 pages for A4/Letter simplex pages. This approximate yield is declared in accordance with ISO/IEC 19752.
From the official Brother HL-B2080DW Monochrome Laser Printer manual, page 12
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