Ships standard with 2 x 550-sheet Paper Cassettes, UFRII/PCL/PS Printing, Direct PDF/XPS Printing, Color Universal Send with PDF High Compression, Encrypted PDF, Digital Signature PDF (Device and User Signature), Trace and Smooth PDF,Searchable PDF/XPS, OOXML (Scan to PPT and Word), Universal Login Manager(Requires Download), uniFLOW Online Express, Access Management System, SSD Data Initialize, Data Encryption (FIPS-140-2), IP Sec, Encrypted Secure Print, Secure Watermark, Web Browser, Color Image Reader, Ethernet 1000Base-T/100Base-TX/10Base-T,USB 2.0/3.0 High Speed Connectivity, Wifi Connectivity, Remote Operator's Software Kit, Color Network ScanGear and Drum Unit. For imageRUNNER ADVANCE DX 4835i /4825i only. Choose one out of following three options, the Single Pass DADF-C1 or the DADF-BA1or the Platen Cover-Y3. For proximity card use, DX platform devices come standard with iC Card Reader Box. Any configuration requiring a Proximity Card Reader is an additional purchase. (ex. uniFLOW MiCard PLUS).