The RTNV HDD Cooler (Reduced Temperature, Noise and Vibration), TTC-HD90, is not only an internal HDD cooler but also a portable 3.5" hard disk rack. To make it used as a portable 3.5" hard disk rack, you will just need to get some additional parts as below: If your HDD is an IDE type, you will need to use the USB 2.0 converter cable.  If your HDD is a SATA type, you can directly use the SATA connector cable, which will be much faster. Notice: While your HDD is reading/writing data, please do not unplug any connectors.  Please remove the device from the operation system and then unplug the connectors to avoid any damage to your HDD.