Brother MFC-8840DN is a monochrome (black and white) multi-function laser printer. It functions as a printer, scanner, copier and fax. The Brother MFC-8840DN media types are plain paper, envelopes, recycled paper and transparencies. The media sizes are letter, legal, executive, A4, A5, A6, B5 and B6. The Brother MFC-8840DN print and copy speed is 21 pages per minute. The print resolution is 1200 x 1200 dpi, the copy resolution is 1200 x 600 dpi and the scanner resolution is 1200 x 1200 dpi. It has a 300 sheet total input capacity and a 150 sheet output capacity. This model also features automatic duplex printing, 32 MB memory, USB 2.0, parallel and ethernet connectivity. The Brother MFC-8840DN uses one toner cartridge and one drum unit, the toner cartridge is a standard yield toner and can print up to 3,500 pages at 5% coverage. The toner cartridge model number is TN540 (TN-540). The drum unit model number is DR510 (DR-510), which has a duty cycle of 20,000 pages at 5% coverage.