This HP LaserJet 2300 is available in three basic configurations. Each of these basic configurations comes with one 250-sheet input tray.
HP LaserJet 2300 - Q2472A
HP PostScript Level III emulation, 32MB of memory standard, one 250-sheet tray.
HP LaserJet 2300D - Q2474A
HP PostScript Level III emulation,
48 MB of memory standard, one 250-sheet tray, built-in duplexer for double-sided printing.
HP LaserJet 2300DN - Q2475A
HP PostScript Level III emulation, 48 MB of memory standard, one 250-sheet tray, built-in duplexer for double-sided printing, JetDirect card for connecting to a network.
Product Data Sheet -- HP
LaserJet 2300 (608 Kb pdf file)
Users
Manuals available at HP's website.