The Kyocera TASKalfa 4551ci laser printer uses the OEM Kyocera laser toner cartridges and supplies. Our compatible toners for Kyocera TASKalfa 4551ci are manufactured to meet the same original specifications and performance standards as the Kyocera OEM laser toner cartridges. We offer a 100% Quality Satisfaction Guarantee on alternative laser toner cartridges and supplies for use in the Kyocera TASKalfa 4551ci.