Amazon.com: Oki Products - Oki - Internal RS-232C Interface for Okidata Microline ML-320/321/520/521/590/591 - Sold As 1 Each - Supports Ready/Busy/X-On/X-Off protocols - Compatible with ML320/321/390/391/420/421/490/491/520/521/590/591 series printers ...
1pcs New Formatter Board For Oki B410 B430 440 Main Board With Network Logic Board - Printer Parts - AliExpress
CPS1 'DASH' A-BOARD repair log – JAMMArcade.net
Oki 6294??? What's this I looked it up all I got was a 6295 for video games this chip was found in a old Casio keyboard if anyone knows anything about this