The Brother DCP-B7640DW is a 3-in-1 mono laser printer, meaning it can print, scan, and copy documents. It is designed for small to medium-sized businesses and home offices, offering fast printing speeds of up to 34 pages per minute, automatic 2-sided printing, and wireless connectivity. The printer also includes a 50-sheet automatic document feeder (ADF) and supports various paper sizes, including Letter, Legal, and A4.