The TN115 4-Pack toner cartridges in black, cyan, and 2x magenta are compatible with Brother printers MFC-9040, 9440, 9450, 9840, HL-4040, and 4050. This product is a generic brand with a laser print technology, ensuring high-quality prints. With a total of 4 cartridges included in the pack, this product provides a cost-effective solution for printing in color. Perfect for businesses or individuals looking for reliable and affordable printing supplies.