Built with the essential features small workgroups need, the MX431adn multifunction supports output up to 42 pages per minute, plus double-side automatic scanning, copying and faxing. Light and compact, it fits almost anywhere and lets you connect via USB or Gigabit Ethernet to give your whole team access. The 2.8-inch color touch screen includes built-in cloud connectivity to enhance workflow. Standard two-sided printing saves paper, while Lexmark full-spectrum security helps protect your network and proprietary information. Add an optional 550-sheet paper tray or availableExtra High Yield Unison toner offering up to 20,000 pages of output. Machine Functions: Copy; Fax; Print; Scan; Printing Type: Laser; Maximum Print Speed (Black): 42 ppm. Network Ready: Yes.
Features
- Multifunctionperformerwithenhancedspeedand fast connectivity
 
- Supports output up to 42 pages per minute, plus double-side automatic scanning, copying and faxing.
 
- 2.8-inch color touch screen includes built-in cloud connectivity to enhance workflow.
 
- Standard two-sided printing saves paper, while Lexmark full-spectrum security helps protect your network and proprietary information.
 
Specifications
| Accepts Paper Size | 
Legal; Letter | 
| Auto Document Feed/Sheets | 
50 | 
| Auto Duplexing Functions | 
Yes | 
| B&W or Color Output | 
B&W | 
| Best Transmission Speed | 
 3 Seconds/Page | 
| Borderless Printing | 
No | 
| Compliance Standards | 
Energy Star Rated; ICES-003 Class B; BSMI Class B; US FDA; UL 60950-1; FCC Class B; cUL CAN/CSA-C22.2 60950-1; NOM; CB EN/IEC 60950-1; CB EN/IEC 60825-1; CE DoC (EN 62301 Class B; EN 62311; CE EN/IEC 60950-1; CE EN/IEC 60825-1; EN 61000-3; EN 55022 Class B; EuP; EN 55024; UL); EFTA (CE); KCC; CCC; CECP; CEL; C-tick DoC; UL-AR; KC mark; UL GS mark; EC 1275; MET-I; ISO 532B; ECMA-370; TED; GOST-R; SII; TER; DE-UZ 205; China Green Product (CGP) | 
| Connector/Port/Interface | 
Ethernet; USB; Wi-Fi | 
| Copying Speed (Black) | 
42 ppm | 
| Depth | 
15.16" | 
| Disclaimer Statement | 
Lexmark MX431adn multifunction laser printer Box contents may vary by country and/or reseller. Subject to change without notice. | 
| Duplex Printing | 
Automatic | 
| Fax Forwarding/Paging | 
Yes | 
| First Page Out | 
10 s | 
| Global Product Type | 
Printer, Copier, Scanner, Fax  Multifunction Machines | 
| Height | 
18.3" | 
| Individual Ink Cartridges | 
Yes | 
| LCD Display (Yes/No) | 
Yes | 
| LCD Display Format | 
2.8" Color Touchscreen Display | 
| Machine Functions | 
Copy; Fax; Print; Scan | 
| Maximum Copy Size (W x H) | 
8.5 x 14 | 
| Maximum Memory | 
512 MB | 
| Maximum Paper Size | 
8.5 x 14 | 
| Maximum Print Speed (Black) | 
42 ppm | 
| Model Name/Number | 
MX431adn | 
| Monthly Duty Cycle (Pages) | 
6,000 | 
| Network Capable | 
Yes | 
| Network Ready | 
Yes | 
| Network Types | 
10/100Base-TX Ethernet | 
| Operating System Compatibility | 
Windows® 2000, Server 2003, XP, Vista | 
| Package Includes | 
Stability Sheet and Safety Sheet; Statement of Limited Warranty/Guarantee; Power Cord(s); Setup Guide; Software and Documentation CD; Return Program Imaging Unit; Return Program Toner Cartridge | 
| Paper Input | 
550 | 
| Paper Input Capacity (Sheets) | 
550 | 
| PC Free Printing | 
Yes | 
| Post-Consumer Recycled Content Percent | 
0% | 
| Pre-Consumer Recycled Content Percent | 
0% | 
| Print Resolution (Black) (Width x Height) | 
600 x 600 dpi | 
| Printing Type | 
Laser | 
| Processor Speed | 
1 GHz | 
| Product Biodegradability in Days | 
0 | 
| Product Biodegradability Indicator | 
N | 
| Product Compostability Indicator | 
N | 
| Reduction/Enlargement Range [Max] | 
400% | 
| Reduction/Enlargement Range [Min] | 
25% | 
| Secure Fax (Password) | 
Yes | 
| Secure Print Function | 
Yes | 
| Sorting Function | 
No | 
| Speed Dial Memories | 
100 | 
| Standard Memory | 
512 MB | 
| Total Recycled Content Percent | 
0% | 
| Weight | 
14.7 lbs | 
| Width | 
16.5" | 
| Wireless Printing | 
No |