HP PCL/PJL reference - Printer Job Language Technical Reference Manual 
HP PCL/PJL reference - PCL 5 Comparison Guide
HP Jetdirect Print Servers - Administrator Guide
HP LaserJet 4200 and 4300 series printer - User Guide
HP LaserJet 4200 and 4300 printers - Software Technical Reference Manual
HP PCL/PJL reference - Printer Job Language Technical Reference Addendum
HP PCL/PJL reference - PCL 5 Comparison Guide Addendum
HP LaserJet Printer Family - Print Media Specification Guide
HP PCL/PJL reference (PCL 5 Printer Language) - Technical Quick Reference Guide
HP Embedded Web Server - User Guide
HP Printers - Supported Citrix Presentation Server environments
HP envelope feeder q2438a - Install Guide
HP 1500-sheet feeder q2444a - Install Guide
HP 500-sheet feeder q2440a,q2441a - Install Guide
HP stapler stacker q2442a, q2443a - Install Guide
HP duplexer q2439 - Install Guide
HP LaserJet 4200 and 4300 series printer - Start Guide
HP q2429a, q2430a, q2436a, q2437a - Maintenance Kit
HP LaserJet Printers - Microsoft Windows XP and Windows Vista Printing Comparsion
HP Universal Print Driver for Windows, Version 4.1 - Technical Frequently Asked Questions (FAQ)
HP LaserJet Products - Installing the Product in Microsoft Windows Vista
LaserJet 4200/4300 Series Envelope Feeder Installation Guide
HP LaserJet Printers - USB Walk Up Printing
HP Jetdirect External Print Server Products - External USB Compatibility
HP LaserJet 4200/4300 Series Printers - Printer Stand Install Guide
HP LaserJet, Color LaserJet and LaserJet MFP and All-in-Ones - Windows 98, 98 Second Edition and ME support statement
