M4349 and LaserJet Pro MFP M227fdw share specifications such as Printer Functions (Print, Scan, Copy, Fax), Print Technology (Laser), Automatic Duplex Printing (Yes), USB (Yes).
The main differences: Black Print Speed A4 (M4349: 43 ppm, LaserJet Pro MFP M227fdw: 28 ppm); Print Resolution (M4349: 1200 x 1200 dpi, LaserJet Pro MFP M227fdw: 600 x 600 dpi).
M4349 may suit users who need its differing values, while LaserJet Pro MFP M227fdw benefits those who need its paired strengths. Review the specs table above before deciding.