GENUINE OEM PULL USB + PARALLEL 60-DAY WARRANTY

OKI / Okidata Main Logic Control Board 44588699 (42992199) with Fan Header – ML420 / 421 / 320 / 321 / 390 / 391 Turbo

This is a genuine Okidata main logic control board, part number 44588699 (interchangeable with 42992199), for OKI Microline dot matrix printers. It's a used OEM pull from a decommissioned industrial printer environment. It's in clean cosmetic condition, with no bulging capacitors, burned traces or damaged ports. It has a USB interface, a parallel port and an extra cooling fan plug header. It works in printers with or without an internal fan. The photos are of the actual item.

✔ MPN 44588699
✔ Interchangeable 42992199
✔ Genuine OKI / Okidata OEM
✔ Clean, no visible damage
✔ USB & parallel interfaces
✔ Cooling fan plug header – works with or without a fan
✔ 60-day seller warranty
Condition
Used OEM Pull
Part Numbers
44588699 / 42992199
Technology
Dot Matrix (Impact)
Support
Reply in 24 Hrs

Product Information

  • Manufacturer / Brand: OKI / Okidata
  • Primary part number (MPN): 44588699
  • Interchangeable part number: 42992199
  • Item type: Main logic board / motherboard / control PCB
  • Print technology: Dot matrix (impact)
  • Interfaces: USB and parallel port

This board is the printer's main processing center. It manages the interface connections, data transmission and mechanical timing. The PCB is visually identical and cross-compatible across several 9-pin and 24-pin Turbo dot matrix printer models.

⚠ Critical Design & Revision Note

  • Hardware variation: This board has the additional white cooling fan plug header on the PCB.
  • Works with both printer setups: This version is compatible with both styles of printer.
  • Printers with a fan: If your printer has an internal cooling fan motor, this board plugs right into it.
  • Printers without a fan: If your printer doesn't use an internal fan (older, passively cooled revisions), this board still installs perfectly. Just leave the fan plug empty.

Verified Model Compatibility

  • Okidata Microline (ML) 420
  • Okidata Microline (ML) 421
  • Okidata Microline (ML) 320 Turbo
  • Okidata Microline (ML) 321 Turbo
  • Okidata Microline (ML) 390 Turbo
  • Okidata Microline (ML) 391 Turbo
Compatibility warning: Please match your existing part number (44588699 or 42992199) or check your printer's service manual before buying to make sure it fits.

Condition

  • Used / OEM pull-part. This is a genuine Okidata board, pulled directly from a decommissioned industrial printer environment.
  • Clean cosmetic condition.
  • No bulging capacitors, burned traces or damaged ports.
  • Interface connections are fully intact.
  • The photos are of the actual item you will receive.

Terms

  • Compatibility: Please match your existing part number (44588699 or 42992199) or check your printer's service manual before buying.
  • Security marking: To prevent fraud and component swapping, every board is discreetly marked and serialized before shipping. A returned item must still show the original seller markings to qualify for a refund.
  • Warranty: 60-day seller warranty. See the return policy section of this listing.

✔ What's Included

  • 1 x OKI / Okidata main logic control board, part number 44588699 (as pictured)

Shipping

Handling time is 1–2 business days. Ships by standard shipping, with tracking.

Customer Service

We respond to messages within 24 hours.

Warranty

60-day seller warranty. See the return policy section of this listing.