"Producer: Hikvision
model: WD20 PURX-78
volume: 2000 GB
The amount of buffer memory: 64 Mb
Form factor: 3.5 “
Advanced Format: Yes
Compatible RoHS: Yes
Data transfer rate: 145 MB / s
Cache: 64 Mb
Rotation speed (RPM): IntelliPower
Load / unload cycles: 300,000"