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OKIDATA Microline 321 Turbo/n 240 x 216 dpi 9 pins Dot Matrix Printer

  • 9 pins
  • Maximum Mono Print Speed (cps): 435 cps
  • Maximum Print Resolution: 240 x 216 dpi
  • Standard Memory: 64 KB
  • Parallel Port, USB, Ethernet
  • Email this page
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The Microline 321 Turbo/n is a high-performance, flexible 9-pin dot matrix printer, especially designed for dedicated printing in the most demanding point-of-sale, automation, and utility applications.

Featuring a rugged printhead, an exclusive optical sensor, and an efficient motor, it delivers accurate, reliable printing results every time. It easily runs twice as long as most printers in its class. It can simplify any job on virtually any stock, and is small enough to place wherever you need data on the spot. Additionally, this ultra-durable printer is compatible with virtually all custom and "off-the-shelf" software.

  • newegg Unmatched performance The rugged printhead keeps your print images sharp for a 200-million character life. It also features a lightweight samarium cobalt magnet and powerful, spring-activated pins to deliver a stronger punch – right to the last page of a six-part form. The exclusive optical sensor accurately positions the printhead on the page, ensuring precisely formed output every time. A lighter, stronger, more efficient motor helps reduce friction, heat build-up, and wear.
  • newegg Exceptional paper-handling versatility The ML321 Turbo/n can be set with an expanded gap between the printhead and the platen, accommodating multi-part forms and stock that are up to twice as thick as the competition can process. The advanced auto-tear feature accurately positions continuous forms for a clean tear at the perforation, eliminating wasted forms. A bottom feed feature* keeps the paper path short and straight when running stiff card stock or labels. (*The optional push tractor is required.)
  • newegg Quality Construction The sturdy ML321 Turbo/n is built to last. A long-lasting rack-and-pinion drive system ensures print quality longer than belt or cable systems. The impact-resistant chassis protects the entire mechanism, even in the harshest environments.

Learn more about the Oki Data Microline 321 Turbo/n


Microline 321 Turbo/n
4.60" x 21.70" x 13.60" (H x W x D)
Approx. 20.90 lbs.


Print Speed
Maximum Mono Print Speed (cps): 435 cps
Max Resolution
240 x 216 dpi
Number of Pins
9 pins
Oki Microline
IBM Graphics ProPrinter
Monthly Duty Cycle
13000 pages

Media Handling

Media Type
Plain Paper
Continuous Form
Media Sizes
Custom Size

Hardware SPEC

Power Requirements
Power Source: AC Supply
Input Voltage: 120 V AC
Power Consumption
Operating Power Consumption: 100 W


USB Ports
Network Ports
Fast Ethernet
Other Ports
Parallel Port


Standard Memory: 64 KB
Maximum Memory: 64 KB
Memory Technology: DRAM

Media Handling: Pull Tractor Top / Push Tractor Rear
Maximum Print Size: - 16"

MTBF: 10000 Hour

Power Source: AC Supply
Input Voltage: 120 V AC
Operating Power Consumption: 100 W

Form Factor: Desktop
Color: White

Additional Information:
True Remote Management Capability
Automatic outbound e-mail alerts
10/100 Base-T Ethernet connectivity; up to 470 Kbps data transfer rate
Internal integrated solution
MTBF @ 25% of Duty Cycle: 10,000 hours MTBF

Quick Info


  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 0 day

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