Toner Cartridges, Maintenance Kits and Parts

One Item
The TF451M uses a single toner cartridge, TOS IF45. TOS IF45 yields 375 pages.
The TOS IF45 cartridge has an approximate yield of 375 pages.
A "Supply Problem" message on the TF451M usually points to a chip-communication hiccup rather than an empty cartridge. Power-cycle the printer (off for 30 seconds, then on), reseat the cartridge until it clicks into place, and gently clean the gold chip contacts with a dry cloth. If the message returns, a replacement TOS IF45 will clear it.