Thank you for your feedback

X443 Minimum Code Levels and Required Memory

Document ID:SO347

Usergroup :External


Problems scanning; Problems faxing


Minimum code levels and required memory; MFP setup; OptraImage 443.


This document contains the minimum code and memory requirements for the X443 MFP option.

  • MarkNet N2501e code:  5.19.12*
  • Printer memory:  24 MB for 'T' models
    64 MB for C720
  • Modem code: ** 4.20
  • Printer code: ** 531.29 for the Optra T61x
    541.019 for the Lexmark T52x/T62x
    840.41 for the Lexmark C720  

* To obtain the latest level of firmware for MarkNet N2501e:

  1. Click here and select Drivers & Downloads.  

  2. Select Network Adapters from the list of products and choose your print server from the list.

  3. Click on Firmware and download the latest firmware file for your adapter.

** To obtain modem code or printer base code, contact the Lexmark Technical Support line.

Please enter the email address you would like to send a copy of this page to.