Quick Start Guide: P-3521 MFP | P-4020 MFP | P-4025w MFP
The Quick Start Guide for the product(s) listed above can be found on the UTAX (UK) Ltd website, the link below will take you to the download page.
Download Link: https://www.utax.co.uk/downloads/quick-start-guides/p-3521-mfp-p-4020-mfp-p-4025w-mfp/