Brother MFC-L3750CDW: Setup, Drivers, Ink and Common Problems

Is the Brother MFC-L3750CDW right for you?

The MFC-L3750CDW was the mainstream color LED all-in-one of 2019, with 25 ppm duplex printing, Ethernet, a 50-sheet ADF and fax. It was the printer many home-based businesses bought to replace a failing inkjet, and it is still widely owned. The TN-227 high-yield set keeps costs moderate and third-party cartridges mostly work on this generation. Belt and waste toner replacements come after tens of thousands of pages.

Best for: Home-based businesses wanting a dependable color all-in-one

Setting up the Brother MFC-L3750CDW

Connect Ethernet or use the touchscreen wireless wizard; Brother Mobile Connect works too. Install the Full Driver & Software Package on Windows for ControlCenter scanning and PC-Fax. Use Web Connect on the panel for scan-to-cloud and run Auto Calibration if colors shift.

1. Unbox and prepare. Remove every piece of shipping tape and packing material, install the ink cartridges, and load paper in the tray.
2. Join your Wi-Fi. Keep the printer close to the router for setup. Most printers only connect to the 2.4GHz band, so if your router broadcasts one merged network name you may need to split the bands temporarily. See our Wi-Fi guide if it will not join.
3. Install the setup app. Use Brother's official app rather than a driver you found on a search result — third-party driver sites are the most common source of printer malware.
4. Add the printer. On Windows 11: Settings › Bluetooth & devices › Printers & scanners › Add device. On macOS: System Settings › Printers & Scanners › Add Printer.
5. Print a test page and run a scan if this is an all-in-one, so you find any problem now rather than when you are in a hurry.

Ink, toner and supplies

The Brother MFC-L3750CDW uses the following consumables. Match the number exactly when you buy: the same printer family often uses several different cartridge numbers by region.

• TN-227BK high-yield toner (3,000 pages)
• TN-227C/M/Y high-yield toner (2,300 pages each)
• DR-223CL drum unit (18,000 pages)
• BU-223CL belt unit
• WT-223CL waste toner box

High-yield (XL) versions almost always cost less per page if you print regularly. On third-party ink and toner, read our honest assessment first, and note that some manufacturers push firmware that rejects non-original chips.

Full specifications