Perfect Compatibility: Replacement for T3661 / T366100 ink maintenance box, compatible with XP-15000, XP15000, XP-15010, XP-15080, XP-6000, XP-6001, XP-6005, XP-6100, XP-6105, XP-8500, XP-8600, XP-8605, XP-970 Expression Premium and Expression Photo printers Efficient Waste Ink Storage: Designed to collect and store waste ink generated during printer cleaning cycles. High-absorbency fiber cotton helps maintain stable printer performance and prevents internal ink overflow Upgraded Smart Chip: Built-in upgraded chip allows fast recognition by your printer for smooth communication and reliable operation, ensuring consistent printing performance Quick & Easy Installation: Plug-and-play design allows you to replace the maintenance box in seconds. Simply remove the old box and install the new one without complicated steps Complete 2-Pack Value Set: Package includes 2 maintenance boxes, 1 user manual, 1 screwdriver, 2 pairs of disposable gloves, and 2 resealable protective bags for convenient installation and storage Reminder: When your printer displays a 'Maintenance Error,' please replace the T3661/T366100 maintenance box promptly Keep your printer performing at its best with this replacement Ink Maintenance Box for T3661 T366100. During printer cleaning cycles, excess ink is automatically directed into the maintenance box to prevent internal ink buildup. Replacing the maintenance box when full helps maintain stable printing performance. This maintenance box features an upgraded smart chip that allows fast recognition by the printer, ensuring smooth installation and reliable operation. With an easy plug-and-play design, replacement takes only seconds without complicated steps. The convenient 2-pack ensures you always have a spare maintenance box ready when needed. Compatible with XP-15000, XP-6100, XP-970, XP-8600, XP-8700, XP-6000, and XP-8500 Expression Premium Photo Printers.