[zdw]

See about replacing the network card on the printer, or updating its firmware. Newer firmwares frequently support Bonjour, and have various security updates.

Replaceable NIC in printers are pretty great, especially when you can buy them for 1/10th of original cost on the used market.

[payne92]

They stopped manufacturing the HP LaserJet 4000 over 21 years ago, and the jetdirect EIO network card (J3111A) not long after that.

If there is a newer network card or firmware that supports this printer, I’d love to hear about it.

[zdw]

The 620n and 635n EIO cards support Bonjour: https://h10057.www1.hp.com/ecomcat/hpcatalog/specs/provision... and http://www.hp.com/ecomcat/hpcatalog/specs/provisioner/99/J79...

[payne92]

Awesome, thanks! I didn't realize that the newer EIO cards were so backward compatible.