Magicard Double-Sided Upgrade Kit for Enduro+, Enduro 3E and Rio Pro Card Printers Easily convert your Uno card printer to allow for dual-sided printing with this upgrade kit. Compatible with the Enduro+, Enduro 3E and Rio Pro printers, this kit contains a ribbon that is placed in your printer just like a standard ribbon. After turning your printer on, your printer firmware will activate the dual-sided printing module. This ribbon can then be used as a standard MA250YMCKOK. Printer Compatibility: Magicard Enduro+ Uno Magicard Enduro 3E Uno Magicard Rio Pro Uno Installation Guide: Turn on your printer. The display will show the choice of Enduro+, Enduro 3E or Rio Pro. Select your printer model. Open the lid and remove any dye film that may have been previously installed. Load the special \'upgrade coded\' MA250YMCKOK ribbon supplied with your upgrade kit. Close the lid. The display will now show \'Enduro+ Duo\', \'Enduro 3E Duo\' or \'Rio Pro Duo\'. Your printer is now ready to start duplex printing.