Please note, that some of the devices don’t have any internal USB ports for print solutions of third party solution providers. Actually it concerns the models HP LaserJet Enterprise M506, M527, M552, M553, M575mfp, M604, M605, M606.
There is a optional module from HP, which extends these devices with internal USB ports. This original accessory can be ordered from an official HP partner.

If the external USB port is not used, you can order the module with an additional adapter cable. With this accessory you can connect the module internally to the Mini-USB port. With this solution, the external USB port is not working anymore.

This package can be ordered with the following article number:
OCR-B module S2053-6M with the adapter cable included: article S2053-6X
BarDIMM module JC-BDP-30100M with the adapter cable included : article JC-BDP-30100X

For more informations please check out the datasheets.