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 ...
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 ...
Amazon.com: 56415301 Okidata Oki Transformer Asm ML320 Turbo 120v Includes Power Switch and Socket (ML320t OKI-ML320) : Office Products
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 ...