Brother MFC-7420 is a monochrome (black and white) multi-function laser printer. It functions as an all in one laser printer, scanner, copier and fax. The Brother MFC-7420 print and copy speed is 20 pages per minute. The print resolution is 2400 x 600 dpi, the copy resolution is 600 x 600 dpi and the scanner resolution is 600 x 2400 dpi. This model has a 250 sheet total input capacity. The Brother MFC-7420 media types are plain paper, laser label sheets, envelopes and transparencies. The media sizes are letter A size, legal, executive, A4 and B5. This model also features 16 MB of memory, USB 2.0 and parallel connectivity. The Brother MFC-7420 uses one toner cartridge and one drum unit, the toner cartridge is a standard yield toner and can print up to 2,500 pages at 5% coverage. The toner cartridge model number is TN350 (TN-350). The drum unit model number is DR350 (DR-350), which has a duty cycle of 12,000 pages at 5% coverage.