The Toshiba T-FC556U-K Black Toner cartridge is a genuine original product designed specifically for Toshiba e-Studio 5506AC printers. Made by Toshiba in the USA, this toner cartridge is compatible with models such as e-Studio 7506AC, 5506AC, and 6506AC. It ensures high-quality black printing for professional documents and images. Compatible with the Toshiba brand, this toner cartridge is a reliable and efficient choice for maintaining your printer's performance and achieving consistent results in your printing needs.