The "Di OPC DRUM Green" for Samsung ML-1666 and ML-1043 refers to a type of OPC (Organic Photoconductor) drum, which is a crucial component in laser printers like the Samsung ML-1666 and ML-1043. The OPC drum is responsible for transferring the toner onto the paper to create the printed image or text.

In this context:

• Di OPC DRUM: Refers to a specific type of OPC drum. "Di" could denote a particular brand or model series.
• Green: The term "green" likely refers to the color of the drum, which is commonly green because of the material used in manufacturing OPC drums (often a green-tinted material).
• Samsung ML-1666 and ML-1043: These are laser printer models from Samsung, and this specific OPC drum is compatible with these printers.

If you're looking to replace or purchase this drum, make sure that the model number matches your printer. Typically, OPC drums need to be replaced after a certain number of pages printed (usually several thousand pages), or if the drum starts showing signs of wear, such as streaks or faded prints.

Would you like more specific details on where to buy it or how to replace it?