Bonds the toner to the paper with heat. Slides in and locks in lower rear of printer.Compatible Printers: HP Color LaserJet 1500 TN, HP Color LaserJet 1500 Series, HP Color LaserJet 1500 LXI, HP Color LaserJet 2500 LN, HP Color LaserJet 1500 N, HP Color LaserJet 2500 LSE, HP Color LaserJet 2500 L, HP Color LaserJet 1500 L, HP Color LaserJet 2500 TN, HP Color LaserJet 2500, Canon LBP-2410, HP Color LaserJet 1500, HP Color LaserJet 2500 N, Canon LBP-87