T644DN
The Lexmark T644DN paired the fastest T-series engine with standard duplex and networking, the flagship configuration for high-output offices. Double-sided printing tamed paper costs while Ethernet sharing spread the workload across the department. The 640H cartridge handled toner economy with its long replacement intervals. Compatible 640H cartridges ensure this flagship keeps its running costs as lean as its output is fast.
| Cartridge | Color | Page yield |
|---|---|---|
| 640H (64015HA / 64035HA) | Black | ~21,000 pages |
Frequently asked questions
Which toner does the Lexmark T644DN use?
The Lexmark T644DN uses the Lexmark 640H high-yield black toner cartridge (OEM 64015HA or 64035HA).
How many pages will one 640H cartridge print in the T644DN?
About 21,000 pages at 5% coverage (ISO/IEC 19752).
Will a compatible 640H cartridge damage my T644DN or void its warranty?
No. Compatible cartridges are built to OEM specifications and do not void your printer’s warranty.
Is there a lower-yield 640 cartridge for light use in the T644DN?
Yes — the 64015SA and 64035SA standard cartridges print about 6,000 pages, a good fit for lighter printing on the T644DN.