HP (Hewlett Packard) LaserJet 4100tn (C8051A) is a monochrome (black and white), workgroup printer. It has a print resolution of 1200 x 1200 dpi with HP's Resolution Enhancement technology, which makes each print clearer and sharper. It has a print speed of 25 pages per minute with the first page out in 12 seconds. The HP LaserJet 4100tn has a 1,100 sheets total input capacity and 300 sheets output capacity. It includes Tray 1: 100 sheet multipurpose tray, Tray 2: 500 sheet tray and Tray 3: 500 sheet tray. It's media types are copier, bond, special application and recycled media; transparencies and labels designed for laser printers. It's media sizes are letter, legal, executive, envelopes (#10, Monarch). It has a monthly duty cycle of 150,000 pages and a 1 year manufacturer warranty. It also features 32 MB RAM with Memory Enhancement technology, infared, USB and parallel connectivity. HP LaserJet 4100tn uses 61A and 61X black cartridge. Cartridge model numbers are C8061A and C8061X.