Hard drive purchased for a particular use: Recording and playback of TV programs via a demodulator (Simba Model HD, receives parabola). The lack of ON OFF switch is acute because if the receiver is not in standby, the hard drive remains active and although it does not heat really, I had the unpleasant experience of hearing slamming in Repeat as he should have been resting. More importantly, he began to slam also recorded program playback, resulting impromptu stops on images, which left me thinking that it might be damaged by prolonged heating. It took several minutes I disconnected by 2 or 3 times before resuming playback without incidents. Since I unplugged when I do not use it and it seems to work normally. Comments written just after 2 weeks of intensive use. New comment to follow if problems are repeated.