Model: HP Deskjet 3620 Color Inkjet Printer, HP Deskjet 3820 Color Inkjet Printer, HP Deskjet 5650 Color Inkjet Printer
Operating System: Mac OS (Note: might work with other versions of this os.)
Supports deskjet printers with USB connectors on the printer, as well as network printing for those models that support Network printing. For use with Mac OS 9.1, 9.2.x, and Mac OS X Classic, though hp recommends that you install it within Mac OS 9.x, and not in Mac OS X Classic. The downloadable file includes a driver installer, which also installs the newest deskjet printer utility.
Download the driver from www.hp.com
Uncompress the file with Stuffit Expander
Launch the "OS 9 HP Inkjet Installer" program, and follow the on-screen instructions