LEXMARK 505H · BLACK HIGH-YIELD TONER
Black toner for a clearly matched MS-series printer.
Lexmark 505H, part 50F5H00, supplies black Unison toner for the exact compatible printer models listed below. Its 5,000-page reference and Return Program conditions give you two checks to make alongside the printer model before a replacement.

EXACT SUPPLY IDENTITY
The full part number makes the distinction.
505H is a black Unison toner cartridge for compatible monochrome Lexmark laser printers. The complete ordering code is 50F5H00. This is the Return Program variant, distinct from the Corporate cartridge with an E suffix.
YIELD IN CONTEXT
Plan around a test reference, not a fixed allowance.
The declared yield is up to 5,000 standard pages in continuous one-sided printing under ISO/IEC 19752. Actual documents and operating conditions affect the result. Lexmark also notes that prolonged printing at very low coverage can reduce actual yield.
MATCH THE PRINTER
Check the exact model and supply region.
The verified list is MS310d, MS310dn, MS410d, MS410dn, MS510dn, MS610de, MS610dn and MS610dte. The official ordering guide places this part in the RoEMEA supply column. Supplies are region-specific; match the printer and its region before ordering.
RETURN PROGRAM TERMS
Know the conditions before the first use.
This cartridge carries a single-use licence and must be returned only to Lexmark for remanufacturing or recycling. It stops after a defined amount of toner has been delivered, with some toner remaining. Lexmark also specifies automatic printer-memory updates intended to restrict counterfeit or unauthorised cartridges.
REPLACEMENT AND HANDLING
Keep toner and imaging-unit replacements separate.
The toner cartridge is a separate supply from the printer’s imaging unit. Follow the exact printer’s replacement instructions and return the used cartridge through the appropriate Lexmark collection arrangement. Unison is the manufacturer’s shake-free toner system; follow the installation guide rather than improvising a refill.

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