OKI Microline 321 Turbo Printer Drivers

The OKI Microline 321 Turbo Printer was a workhorse in the realm of dot matrix printers. Renowned for its robustness, it delivered fast and reliable printing for businesses and offices. Its impact printing technology churned out sharp, durable documents, handling multipart forms with ease. Despite its retirement, its legacy endures as a stalwart in the era of dot matrix printers, known for its exceptional durability and longevity. However, evolving printing technologies have outpaced its capabilities, marking a shift toward faster and more versatile printing solutions, relegating the Microline 321 Turbo to a cherished piece of printing history.

Latest drivers for this device can be found at the Oki.com a small cache of publicly available below. Though the Driver isn't specified to work on Operating Systems before Windows 7, it should function on Windows XP.

Basic Specs:

Printer Output Type: Monochrome

Printing Technology: Dot Matrix

Connections: USB

Max Print speed: Monochrome32 ppm

  • Maximum Print Speed_Black - 435 cps
  • Network Ready - No
  • Printer Type - Dot Matrix
  • Monthly Duty Cycle Pages - 13,000
Install Instructions


1. Double click on exe file.
2. Follow the on-screen prompts to extract the driver files.
3. Launch Add Printer Wizard.
4. When prompted for the Manufacturer and Model click on Have Disk.
5. Browse to the following location: "C:\OKIDATA\ML3201".
6. Click OK.
7. Follow the prompts to finish the driver installation.


1. Untar downloaded tar file (tar -xvf *.tar)
2. Follow readme.txt instructions