This is a compatible replacement for the Samsung MLT-D109S (MLTD109S) black laser toner cartridge guaranteed to perform with your Samsung SCX-4300 laser printer. It replaces the original Samsung MLT-D109S laser toner cartridge. The compatible replacements for the MLT-D109S laser toner cartridges and supplies (also known as generic) are specially engineered to meet the highest standards of quality, reliability and exceptional yields that meet or exceed OEM (Original Equipment Manufacturer) standards for the MLTD109S and offer high-quality printing results. Containing new and used parts, including a new smart chip, they are an economical alternatives to expensive OEM MLTD109S Samsung laser toner cartridges and supplies, and offer big savings over brand-name MLT-D109S laser toner cartridges and supplies. While most competitors simply refill the toner cartridge and hope the drum and other key components last we fully disassemble the toner cartridge and rebuild it to ensure the highest quality prints. We directly import these compatible LD Products replacements for MLT-D109S / MLTD109S laser toner cartridges from an ISO-9001 certified factory in Korea just like the genuine Samsung toners. Since we import ourselves we can pass the savings on to you. The use of compatible replacement laser toner cartridges and supplies does not void your printers warranty.We offer a Two Year 100% Quality Satisfaction Guarantee on our compatible alternatives to MLT-D109S laser toner cartridges and supplies. For use in the following printers: SCX Printers SCX-4300. LD Products is the exclusive reseller of LD Products brand of high quality printing supplies on Newegg.