WPP MICR C3906A, 02-81051-001 Compatible toner fits LaserJet 5L, LaserJet 5LFS, LaserJet 5LXtra, LaserJet 6LXI, LaserJet 6LSE, LaserJet 6L, LaserJet 3150XI, L, LaserJet 3100SE, LaserJet 3100 Series, LaserJet 3100, LaserJet 3100XI, LaserJet 3150, LaserJet 3150CXI, LaserJet 3150SE Printers. Magnetic Ink Character Recognition toner cartridge is remanufactured for check printing. Compatible with laser printers, MFP’s, and MOST TROY printers. If you have a TROY branded printer please advise.