If the HP 4Si is a pedigreed workhorse, the HP LaserJet 5Si is like a team of them, with its 40 MHz processor and 24 ppm engine!
600 x 600 dpi, plus built-in HP REt and microfine toner to enhance resolution.
Memory: 4 MB standard on 5Si and 5Si NX, expandable to 132 MB.12 MB on M and MX versions, expandable to 76 MB. HP MEt (memory enhancement).
40 MHz AMD 29040 RISC processor and fast WX engine deliver up to 24 pages per minute.
Standard Input Capacity: 1,100 sheets, with 1 x 100-sheet multi-purpose and 2 x 500-sheet universal trays. Paper sizes: Letter, A4, Legal, Executive, A3, B4, B5, 11×17. Optional 100-envelope tray handles Com 10, Monarch, DL, C5, B5 . Optional high capacity 1500-sheet paper feeder available.
Output capacity: 500-sheet upper bin. 100-sheet left bin. Correct order output in top bin. Faceup in left bin. Output bin full sensor.
More paper-handling options: high capacity 2000-sheet input tray as a fourth source that increases total capacity to 3,100 sheets; a Duplex Unit for two-sided printing; and a 2000-sheet MultiBin Mailbox with 5 addressable bins (and optional stapler). Software support for paper-handling options simplifies configuration and use.
Departmental network support— reliable high volume printing with 100,000 page monthly duty cycle.
HP Enhanced PCL 5 (5Si and 5Si NX), plus Adobe PostScript Level 2 (5Si MX). Automatic switching.