Product Type: DA07020T12U /DV07020B12UDimensions: 70mm × 70mm × 20mmSpeed ??reference: 650 ~ 4400 ± 10% RPMBearing type: single ball / double ballLife: 40000 hoursNoise reference: 19DBA ~ 30DBA ± 3DBARated voltage: DC12VRated voltage: 0.7AInterface type: motherboard 4pin portSpeed ??monitoring: support