| Colour | Yes |
| Print technology | Laser |
| Duplex printing | Yes |
| Maximum resolution | 600 x 600 DPI |
| Print speed (black, normal quality, A4/US Letter) | 24 ppm |
| Print speed (colour, normal quality, A4/US Letter) | 24 ppm |
| Duplex print speed (black, normal quality, A4/US Letter) | 13 ppm |
| Duplex print speed (colour, normal quality, A4/US Letter) | 13 ppm |
| Time to first page (black, normal) | 10.9 s |
| Time to first page (colour, normal) | 10.9 s |
| Print margins (top, bottom, right, left) | 4.2 mm |
| Maximum duty cycle | 50000 pages per month |
| Printing colours | Black, Cyan, Magenta, Yellow |
| Page description languages | PCL 5, PCL 6, PCLm, PostScript 3 |
| Recommended duty cycle | 600 - 2500 pages per month |
| Total number of input trays | 2 |
| Total input capacity | 251 sheets |
| Total output capacity | 100 sheets |
| Paper input type | Paper tray |
| Maximum number of input trays | 2 |
| Maximum input capacity | 251 sheets |
| Maximum output capacity | 100 sheets |
| Maximum ISO A-series paper size | A4 |
| Paper tray media types | Cut sheet, Envelopes, Glossy paper, Labels, Plain paper |
| ISO A-series sizes (A0...A9) | A4, A5, A6 |
| Non-ISO print media sizes | Executive, Folio, Hagaki card, Legal, Letter, Oficio, Statement, Universal |
| JIS B-series sizes (B0...B9) | B5 |
| Envelopes sizes | 7 3/4, 9, 10, C5, DL |
| Paper tray media weight | 60 - 176 g/m² |
| Direct printing | No |
| USB port | Yes |
| USB 2.0 ports quantity | 1 |
| USB connector | USB Type-B |
| Wi-Fi | Yes |
| Ethernet LAN | Yes |
| Cabling technology | 10/100/1000Base-T(X) |
| Ethernet LAN data rates | 10,100,1000 Mbit/s |
| Wi-Fi standards | 802.11b, 802.11g, Wi-Fi 4 (802.11n) |
| Security algorithms | HTTPS, IPSEC, SSH, SSL/TLS |
| Supported network protocols (IPv4) | TCP/IP IPv4, TCP, UDP |
| Supported network protocols (IPv6) | TCP/IP IPv6, TCP, UDP |
| Management protocols | DHCP, APIPA (AutoIP), BOOTP, RARP, mDNS, IGMP, WINS, DDNS, SNMPv3, SNMPv1, SNMPv2c, NTP, ICMP, HTTP, DNS, ARP, HTTPs (SSL/TLS), Finger |
| Mobile printing technologies | Apple AirPrint |
| Internal memory | 512 MB |
| Maximum internal memory | 512 MB |
| Card reader integrated | No |
| Built-in processor | Yes |
| Processor frequency | 1000 MHz |
| Processor cores | 2 |
| Sound pressure level (printing) | 52 dB |
| Market positioning | Business |
| Product colour | Black, White |
| Built-in display | Yes |
| Colour display | No |
| Touchscreen | No |
| Display number of lines | 2 lines |
| Certification | ICES-003 Class B, US FDA/CDRH, UL 60950-1, FCC Class B, cUL CAN/CSA-C22.2 60950-1, CB EN/IEC 60950-1, CB EN/IEC 60825-1, CE DoC (EN 62311, EN 55022(Class B), EN 55024, EN 61000, EN 61000, UL), EFTA (CE), KCC, CCC, CECP, CEL, RCM DoC, UL-AR, KC mark, UL GS mark, UCRF, BSMI EMC Class B |
| Power consumption (printing) | 395 W |
| Power consumption (ready) | 17 W |
| Energy Star Typical Electricity Consumption (TEC) | 0.31 kWh/week |
| Windows operating systems supported | Yes |
| Mac operating systems supported | Yes |
| Linux operating systems supported | Yes |
| Server operating systems supported | Windows Server 2016 |
| Operating temperature (T-T) | 10 - 32 °C |
| Operating relative humidity (H-H) | 8 - 80% |
| Operating altitude | 0 - 3048 m |
| Sustainability certificates | Blue Angel, ENERGY STAR |
| Width | 411.2 mm |
| Depth | 394.1 mm |
| Height | 243.7 mm |
| Weight | 16.1 kg |
| Package width | 332 mm |
| Package depth | 556 mm |
| Package height | 519 mm |
| Package weight | 19.1 kg |
| Cartridge(s) included | Yes |
| Included cartridge capacity (black) | 750 pages |
| Included cartridge capacity (CMY) | 500 pages |
| Cables included | AC |
| Harmonized System (HS) code | 84433210 |
| Description |
| Lexmark CS331dw. Print technology: Laser, Colour. Maximum duty cycle: 50000 pages per month. Maximum resolution: 600 x 600 DPI. Maximum ISO A-series paper size: A4. Print speed (black, normal quality, A4/US Letter): 24 ppm, Duplex printing. Wi-Fi. Product colour: Black, White |
