The MFC-8840DN is the flagship model for all Brother Monochrome Laser Multi-Function Centers which offers the same functions and features as the MFC-8840D plus built-in networking. It's an affordable solution for any home office or any size business since multiple users can print, scan and fax using just one machine which saves you space and ... Memory. (MFC-8440, MFC-8640D, MFC-8840D and MFC-8840DN only) Fax sending will not be stopped during PC printing. Two-sided printing (Duplex Printing) The supplied printer driver supports duplex printing. (For more information, see Duplex Printing on page 2-8.) Automatic Duplex Printing (For MFC-8640D, MFC-8840D, MFC-8840DN and DCP-8045D) BROTHER MFC 9420CN SCAN TO PDF. VueScan is the best way to get your Brother MFCCN working on Windows 10, Windows 8, Windows 7, macOS Mojave, and more. See why over 10 million. I’m using Mac OS X x or greater. The network scanning feature does not work when using the SCAN key or the control panel of my Brother machine. Now, with the Brother ... The MFC-8840D is a 5-in-1 Laser Printer, Scanner, Copier, Fax Machine, and PC Fax office solution combining performance, connectivity, and reliability. The MFC-8840D is a full-feature fax, and an up to 21 PPM laser printer, which prints at up to 2400 x 600 dpi (HQ1200). After some research on models and cost of multi-functional laser printers, I am happy to refer you this Brother MFC-8840D. It does duplex, and PC-fax, the most important that I can not find in other brand name laser multi-funtional printer for the cost less than $500. The toner is cost less than $67 for pages. That's a bargain. Just do it.