These printers use the KX-P455 cartridge:
Click On a Printer to View it's Cartridges
          Panasonic 4400
          Panasonic 4400 SideWriter
          Panasonic 4401
          Panasonic 5400
          Panasonic Fax 2900
          Panasonic Fax KX-F 2900
          Panasonic Fax KX-F 3000
          Panasonic Fax KX-F 3100
          Panasonic KV F-511
          Panasonic KX-F 2900
          Panasonic KX-F 3000
          Panasonic KX-F 3000 Fax
          Panasonic KX-F 3100
          Panasonic KX-F 3100 Fax
          Panasonic KX-P 4400
          Panasonic KX-P 4400 SideWriter
          Panasonic KX-P 4401
          Panasonic KX-P 4403
          Panasonic KX-P 5400
          Panasonic KX-P 5400 M1
          Panasonic KX-SP 100
          Panasonic Sidewriter Kx P-4400
          Roland LP 426
          Roland LP 430
          Roland LP 430 SE
          Roland LP 800
          Roland Raven LP-426
          Roland Raven LP-430
          Roland Raven LP-430 SE
          Roland Raven LP-470
          Roland Raven LP-470 PS