This is a direct-replacement OKI main logic control board, part number 44588699, pulled for the Microline ML420 and ML421 series dot matrix printers. 44588699 is a verified, indexed part number in parts catalogs. The board has an integrated USB port alongside a parallel port. Please check your broken board's part number against 44588699 before buying.
| Brand | OKI / Okidata |
| MPN | 44588699 |
| Device type | Main logic board |
| Connection type | USB / Parallel |
| Compatible models | OKI Microline ML420, ML421 |
This is a direct-replacement main logic control board, pulled for the OKI Microline ML420 and ML421 series dot matrix printers.
Please check the physical part number on your broken board against 44588699 before buying. A matching number makes sure it's a perfect drop-in fit for your printer.
The photos are of the actual item. Only the items listed and shown in the photos are included.
Handling time is 1–2 business days. Ships by standard shipping, with tracking.
We respond to messages within 24 hours.
See the return policy section of this listing.