This high-quality replacement cartridge,compatible with HP C3906A Compatible with the following models: Hewlett Packard LaserJet 3100, Hewlett Packard LaserJet 5L, Hewlett Packard LaserJet 5Lse, Hewlett Packard LaserJet 5Lxi, Hewlett Packard LaserJet 6L,6LXI, 6LSF 3-Month Warranty Free Shipping