Support steady black-and-white output on compatible Lexmark CS/CX417 and 517 printers with the 71B1HK0 return program toner cartridge. This OEM supply is designed for organizations that need predictable print quality, reliable device compatibility, and a procurement model that fits managed fleet operations. In environments where print volume is steady and downtime is expensive, the right cartridge choice matters as much as the printer itself. The return program format is built for customers who want a lower-cost OEM path while staying within Lexmark’s supply ecosystem. That makes it a strong fit for IT and procurement teams balancing quality, compliance, and spend control across distributed offices. Black toner remains the workhorse for invoices, forms, shipping documents, and internal records, so consistency and availability are more valuable than chasing the lowest generic price. Choose this cartridge when you need a supply that aligns with approved printer models and supports repeatable output across business-critical workflows. It is a practical option for teams standardizing on Lexmark hardware and looking to keep consumable management straightforward.