Factory is keeping updating material and tech, you may receive the different appearance but same function.
Parameters: 40x40x15mm
Connector: 2pin-Xh 2.54
Rated Voltage: 5V
Rated Current: 0.14A ±10%
Speed: 5500RPM±10%
Airflow: 6.7CFM ±10%
Bearing Type: Sleeve
Noise Level: 25.8 dBA±10%
Cable Length: 15cm