This HP LaserJet 2100 is available in three configurations.
HP LaserJet 2100 (sometimes referred
to as 2100xi or 2100se)
4MB of memory standard
HP LaserJet 2100M
HP PostScript Level II emulation for mixed language environments
and 8 MB of memory standard
HP LaserJet 2100TN
HP PostScript Level II emulation for mixed language environments,
8 MB of memory standard, an HP 600n JetDirect network card, and
an additional 250 sheet paper tray.
Product Data Sheet -- HP
LaserJet 2100 (585 Kb pdf file)
Users
Manuals available at HP's website.