M104a and LaserJet Pro MFP M227fdn share specifications such as Print Technology (Laser), Print Resolution (600 x 600 dpi), USB (Yes), Product Brand (HP).
The main differences: Printer Functions (M104a: Print, LaserJet Pro MFP M227fdn: Print, Scan, Copy, Fax); Black Print Speed A4 (M104a: 22 ppm, LaserJet Pro MFP M227fdn: 28 ppm); Automatic Duplex Printing (M104a: —, LaserJet Pro MFP M227fdn: Yes).
M104a may suit users who need its differing values, while LaserJet Pro MFP M227fdn benefits those who need its paired strengths. Review the specs table above before deciding.