| Colour | No |
| Print technology | Laser |
| Duplex printing | Yes |
| Maximum resolution | 1200 x 1200 DPI |
| Print speed (black, normal quality, A4/US Letter) | 44 ppm |
| Duplex print speed (black, normal quality, A4/US Letter) | 22 ppm |
| Time to first page (black, normal) | 6 s |
| Print margins (top, bottom, right, left) | 4 mm |
| Maximum duty cycle | 120000 pages per month |
| Printing colours | Black |
| Number of print cartridges | 1 |
| Page description languages | Microsoft XPS, PCL 5e, PCL 6, PDF 1.7, PPDS, PostScript 3 |
| Recommended duty cycle | 2000 - 15000 pages per month |
| Country of origin | China |
| Total number of input trays | 2 |
| Total input capacity | 350 sheets |
| Total output capacity | 150 sheets |
| Paper input type | Paper tray |
| Multi-Purpose tray | Yes |
| Multi-Purpose tray input capacity | 100 sheets |
| Maximum number of input trays | 5 |
| Maximum input capacity | 2000 sheets |
| Maximum output capacity | 150 sheets |
| Maximum ISO A-series paper size | A4 |
| Paper tray media types | Card stock, Envelopes, Labels, Plain paper, Transparencies |
| ISO A-series sizes (A0...A9) | A4, A5, A6 |
| Non-ISO print media sizes | Executive, Folio, Legal, Letter, Oficio, Statement, Universal |
| JIS B-series sizes (B0...B9) | B5 |
| Envelopes sizes | 7 3/4, 9, 10, DL |
| Paper tray media weight | 60 - 120 g/m² |
| Multi-Purpose Tray media weight | 60 - 216 g/m² |
| Direct printing | No |
| Standard interfaces | Ethernet, USB 2.0 |
| USB 2.0 ports quantity | 1 |
| USB connector | USB Type-B |
| Wi-Fi | No |
| Ethernet LAN | Yes |
| Network ready | Yes |
| Cabling technology | 10/100/1000Base-T(X) |
| Ethernet LAN data rates | 10,100,1000 Mbit/s |
| Security algorithms | 802.1x RADIUS, LEAP, MD5, MSCHAPv2, PEAP, SSL/TLS, TTLS |
| Supported network protocols (IPv4) | TCP/IP IPv4, AppleTalk, TCP, UDP |
| Supported network protocols (IPv6) | TCP/IP IPv6, AppleTalk, TCP, UDP |
| Management protocols | DHCP, APIPA (AutoIP), mDNS, IGMP, WINS, DDNS, SNMPv3, SNMPv1, SNMPv2c, Telnet, 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 |
| Sound pressure level (printing) | 56 dB |
| Sound pressure level (duplex printing) | 55 dB |
| Noise level (idle) | 14 dB |
| Product colour | Black, White |
| Built-in display | Yes |
| Display | LCD |
| Colour display | Yes |
| Display diagonal | 6.1 cm (2.4") |
| Touchscreen | No |
| Certification | ICES-003 Class B, BSMI Class B, VCCI 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 |
| Power consumption (printing) | 620 W |
| Energy Star Typical Electricity Consumption (TEC) | 1.8 kWh/week |
| Windows operating systems supported | Yes |
| Mac operating systems supported | Yes |
| Linux operating systems supported | Yes |
| Operating temperature (T-T) | 16 - 32 °C |
| Operating relative humidity (H-H) | 8 - 80% |
| Operating altitude | 0 - 5000 m |
| Sustainability certificates | ENERGY STAR |
| Width | 399 mm |
| Depth | 374 mm |
| Height | 260 mm |
| Weight | 14.1 kg |
| Package width | 430 mm |
| Package depth | 470 mm |
| Package height | 376 mm |
| Package weight | 16 kg |
| Cartridge(s) included | Yes |
| Software CD | Yes |
| Documentation CD | Yes |
| Cables included | AC |
| Harmonized System (HS) code | 84433210 |
| Description |
| Lexmark MS521dn. Print technology: Laser. Number of print cartridges: 1, Maximum duty cycle: 120000 pages per month. Maximum resolution: 1200 x 1200 DPI. Maximum ISO A-series paper size: A4. Print speed (black, normal quality, A4/US Letter): 44 ppm, Duplex printing. Display: LCD. Network ready. Product colour: Black, White |
