| Colour: Black |
| Compatible with SL-M4020ND/M4020NX/M4070FR/M4070FW/M4070FX |
| Innovative toner management technology gives early warnings when your toner cartridge is running low |
| Page Yield: Up to 15,000 pages |
| Produces crisp, clear text and images |
| Yield: approx. 15,000 pages |