This English quick guide is based on the Korean catalog. Confirm model-specific compatibility and installation details on the manufacturer’s official page.
Download CS521dn driver
- Match the full model number on the device label, including suffixes.
- Check your operating-system version and architecture on the official support page.
- Preserve working queues, ports, options and other users' jobs; inspect only your own failed work.
- Follow the manufacturer’s instructions for power, USB, and network connections.
Model and driver source
This guide is for the a4 colour laser print-only printer, automatic duplex, pc usb 2.0 type-b and gigabit ethernet. wi-fi requires optional marknet n8372. not ms521dn monochrome or scan/copy/fax; distinguish front usb host. model Lexmark CS521dn. The download button opens the official Lexmark support page in this window. The manufacturer’s page is authoritative for the available driver packages and their current compatibility.
Operating-system and download checks
The Korean catalog lists these systems for checking: Verified 8 October 2026: actual Windows 11 64-bit list and package detail DRI1000765. Printer Driver and Software (Print and Scan) 3.1.0.0, 196MB, 31 July 2026; Lexmark Printer Software Installation Package 06122026.exe. Products include CS521. Compatible Windows 11 64-bit; 10/8.1/8/7 32/64-bit; Server 2025/2022/2019/2016/2012 R2/2012 64-bit. Shared scanner/fax software does not add hardware. Other OS/CPU needs separate actual file verification; legacy availability is not security support.. Select your exact operating system and version on the official page. If your version is not offered, do not install a package intended for a different system.
Connection and installation
- Verify full model, OS/CPU, rights, power/paper/toner/cable; preserve jobs/queues/ports/options and read terms yourself. No default reset, firmware update or security bypass.
- Use compatible model-specific installer and actual prompts. General official installer guide connects USB before local installation; reconcile any package-specific prompt. Use PC Type-B, not front Type-A host. Check actual CS521dn queue/USB port/media and test.
- Ethernet: approved network, same LAN, real printer IP from device/TCP-IP menu. Match discovery model/address and actual queue/port; test. No example IP or unauthorized shared-address changes.
- Optional N8372 only: follow option fitting instructions. Guide p95: Settings / Network-Ports / Wireless / Setup On Printer Panel, then displayed instructions and approved actual SSID/authentication. Verify actual address/port and test. Coordinate shared users; never disable encryption or authentication.
Troubleshooting
Guide p157: correct printer in print dialog, power/display error, functioning ports and securely connected cables. Network: actual IP/queue; Wi-Fi: installed optional adapter/SSID. Before restart coordinate shared work; power off, wait about 10 seconds, on. Reinstallation follows basic checks with settings preserved. Persistent faults need exact OS/CPU/connection/display error for support.
Frequently asked questions
Where should I download the driver?
Use the official manufacturer page linked in the download panel above.
Can I use a driver for a similar model?
Do not assume it is compatible. Confirm the full model number and package on the manufacturer’s page.