SL-M3870 FW

Samsung's SL-M3870 FW is the wireless ProXpress business multifunction with fax, listed with spacing in the model name. Print, scan, copy, and fax, all reachable over Wi-Fi.

It runs on the MLT-D203S standard through MLT-D203E extended yield. Our compatible versions save money; genuine OEM versions stay original. Fast shipping from Clever Supplies.

Toner Cartridges for SL-M3870 FW

This printer works with the following toner cartridges:

Samsung MLT-D203S
Samsung MLT-D203L
Samsung MLT-D203U
Samsung MLT-D203E

More Samsung Printers

Frequently Asked Questions

For a busy office SL-M3870 FW, is high-yield toner the obvious choice?

For the SL-M3870 FW, high-yield MLT-D203L cartridges cost more upfront but deliver a lower cost per page — the right choice if you print steadily. Light users who print a few pages a week may never finish a high-yield before age-related issues creep in. Match the yield to your real monthly volume.

Should I shake the cartridge over a trash can to avoid a mess near the SL-M3870 FW?

The redistribute trick helps the SL-M3870 FW when output fades evenly, which signals toner pooling at one end of the cartridge. It won't fix sharp streaks or spots — those point to drum or roller issues. Shake for fading, replace for streaking.

What degrades first in an aging toner cartridge for the SL-M3870 FW: the toner or the drum components?

Heat shortens shelf life far more than time alone: a MLT-D203S kept in a hot warehouse for a year can fare worse than one kept cool for three for the SL-M3870 FW. If you're unsure about an old spare, inspect the packaging for damage and print a test page after installing. Faded bands or speckling suggest the cartridge has degraded.