This toner cartridge is compatible with HP C3900A Designed for maximum performance. Long-life drum. 100% Guaranteed. For use in the following printers: Calcomp: CCL600 Hewlett Packard: LaserJet 4V, 4MV, EP-B, BX Newgen Systems: Turbo PS/660 QMS: 860 Series, 1660 Series 3-Month Warranty Free Shipping