XF051 | 140 mm | Type Fan | Suitable location Computer case | Rotational speed (max) 700 RPM | Noise level (high speed) 30 dB | Maximum airflow 62.05 cfm | Pulse-width modulation (PWM) support Yes | Number of fans 1 fan(s) | Fan connector 4-pin
XF031 | 40 mm | Type Fan | Supported processor sockets Not supported | Compatible processor series Not supported | Suitable location Computer case | Rotational speed (max) 4500 RPM | Noise level (high speed) 19 dB | Maximum airflow 6.9 cfm | Colour Black | Number of fans 1 fan(s) | Fan connector 3-pin | Noise level 19 dB