The Xerox Phaser 3635MFP/X laser printer uses the OEM Xerox laser toner cartridges and supplies. Our compatible toners for Xerox Phaser 3635MFP/X are manufactured to meet the same original specifications and performance standards as the Xerox OEM laser toner cartridges. We offer a 100% Quality Satisfaction Guarantee on alternative laser toner cartridges and supplies for use in the Xerox Phaser 3635MFP/X.