HP (Hewlett Packard) LaserJet 2420dn (Q5959A) is a monochrome (black and white) workgroup printer. It has a 1200 x 1200 dpi resolution which makes each print clearer and sharper. It has a print speed of 30 pages per minute with first page out in 10 seconds. The HP laserjet 2420dn has a 350 sheets input capacity and 250 sheets output capacity. It includes Tray 1: a 100 sheet multi-purpose tray and Tray 2: a 250 sheet tray. It's media types are paper (plain, preprinted, letterhead, prepunched, bond, recycled, color, rough), transparencies, labels, envelopes, cardstock, user-defined. It also features automatic duplexing, 64 MB RAM, parallel and USB connectivity. HP laserjet 2420dn uses 11A and 11X black cartridge. Cartridge model numbers are Q6511A and Q6511X.