The HP LaserJet Pro 4003dn printer is a single function mono laser printer that can print up to 40 pages per minute in black and white. It has a print resolution of 1200 x 1200 dpi and supports automatic duplex printing. It also has a 256 MB memory, a 1200 MHz processor, and a 2-line backlit LCD display. It can connect to USB and LAN devices, and supports mobile printing via HP Smart App, Apple AirPrint, and Mopria. It has a monthly duty cycle of up to 80,000 pages and uses HP 151A or HP 151X toner cartridges.