This premium-quality MSE cartridge is compatible for use in HP Color LaserJet 2600 printers. All MSE cartridges are intelligently re-engineered™ with new, matched internal components. This guarantees perfect color reproduction and image density, faithful to the original HP specifications. This is possible because MSE cartridges are built with proprietary OPC drums, matched to the proprietary toner formulation used. MSE cartridges are a no-comprise replacement to original HP cartridges, all the performance without the high price.