The specifications on the datasheet for my OneTouch drive shows the operating temperature at: 5°C to 35°C (41°F to 95°F)
The drive feels warmer than what is stated on the datasheet.
The temperature specification identified is not the physical temperature of the drive. It is the temperature of the room where the drive is. The OneTouch drive will feel much warmer to the touch and can reach temperatures of approximately 55oC and remain within specification.