Cartridges Unlimited’s Compatible Laser Toner Cartridges and supplies for HP 600 Printer M601dn are designed to offer best print performance, dependability and consistent yields that meet or surpass HP OEM (Original Equipment Manufacturer) specifications for the HP 600 Printer M601dn and offer high-quality output. These compatible toners are brand new and are a smart alternative to high-cost OEM HP laser toner cartridges, offering substantial savings over the HP 600 Printer M601dn supplies.