Compatible with multiple models - This drum unit chip is specifically designed for use with Aficio MP401, SP4520DN, MP401SPF, and MP402SPF printers, ensuring integration and reliable performance. yield performance - Designed for volume printing, this chip allows for prolonged usage, the need for frequent replacements and helping you get the most out of your printing resources. Easy installation - The user-friendly design ensures that you can easily install the chip into your printer without any