i-SENSYS LBP631Cw
i-SENSYS LBP633Cdw
Print speed (A4)
18pm
21ppm
Security
Secure PIN print
Secure PIN print
Display
5-line LCD
5-line LCD
Paper capacity
250 sheets
250 sheets
Single/double-sided printing
Simplex printing
Automatic duplex printing
Wi-Fi
Ready
Ready