The HP Laserjet 5000 is available in four configurations.

HP LaserJet 5000
The HP 5000 comes standard with 4 MB RAM and one 250-sheet tray.

HP LaserJet 5000 + Networking Capabilities
A standard LaserJet 5000 is modified to include 12MB RAM and an HP JetDirect card for connecting to a network.

HP LaserJet 5000 + Optional 500-sheet Lower Cassette
An optional 500-sheet lower cassette is added to a standard LaserJet 5000.

HP LaserJet 5000 + Networking Capabilities + Optional 500-sheet Lower Cassette
A standard HP LaserJet 5000 is modified to include 12 MB RAM and an HP JetDirect card for connecting to a network. An optional 500-sheet lower cassette is added so the input sheet capacity increases to 850 sheets.

Product Data Sheet -- HP LaserJet 5000 (374 Kb pdf file)
Users Manuals available at HP's website.