LD Refurbished Dell 2145cn Set of 4 High Yield Laser Toner Cartidges: 1 Black 330-3789, Cyan 330-3792, Magenta 330-3791, Yellow 330-3790 All of our products are offered with a Two Year 100% Quality Satisfaction Guarantee. All LD branded products are backed by a LIFETIME 100% satisfaction guarantee The use of LD replacement cartridges and supplies does not void your printers warranty.