Xerox Corporation Lexmark 55B1X00 Extra High Yield Black Laser Toner Cartridge for Lexmark MS431 and MX431 Series brand_HP Inc. the Lexmark Unison 520HA toner

the Lexmark Unison 520HA toner adheres to industry standards for ink and toner cartridges

Long battery life of up to 18 months from a single AA battery minimizes downtime

The gold-plated connectors and contacts enhance signal integrity and durability

this product delivers the performance

Xerox Corporation Lexmark 55B1X00 Extra High Yield Black Laser Toner Cartridge for Lexmark MS431 and MX431 Series brand_HP Inc. the Lexmark Unison 520HA tonerLexmark Unison Original Extra High Yield Laser Toner Cartridge Black Pack The Lexmark 55B1X00 Extra High Yield Laser Toner Cartridge, manufactured by Xerox Corporation, delivers exceptional monochrome printing performance for your Lexmark MS431 and MX431 series printers. Designed for high volume printing, this genuine Lexmark cartridge provides a typical yield of approximately 20,000 pages, making it ideal for busy offices and demanding environments.