Is this HD "always on," or does it have a power switch/button?
1106847
I've moved on to 4TB drives. There is no switch - I eject the drive from the desktop and then unplug power in the back of the drive. I only use it as an external drive for backups.
221647
mine has a power supply which i leave hooked up. are you talking about a different drive maybe?
2015731
There is no switch on the back. I do not know if it has an internal auto-power select capability.
725058
No Power no Data. Drive is dead to the computer without power. Also if you turn another switch on after boot up, computer doesn't see it. you must pick which hard drive you want before bootup.
730633
Not sure if I understand the question but there is an on off switch. I have 7 external drives and they're all off unless I'm using them.
897451
Hello, I have two and have not had an issue. This is only switch connected between the Power Supply and Hard Drive. If anything these have actually help save selected drives from running unnecessarily when not need. I have 2 of these units that control 12 Hard Drives. No issues in 2 years.
1657034
I do not have it hooked up as "always on" so I can not answer your question. I hooked it up to the back up light power line so it only comes on when I shift into reverse so the screen is blank until I shift into reverse then it comes on. When I put it back in drive the screen goes blank and there is no longer power to the camera.
1428470
It is always powered on. There is no on/off switch. Just unplug the 12dc wall-wart.
1122140
Yes there's a power switch on the front. Be careful though. Mine only lasted a couple months
279351
No. just the power button. its a simple design laptop but performs really good.
900310
Yes, it is in the rear next to the power and data cable plug-ins. I have two usb 3 hard disk enclosures. One is a 4 Tb and the other is a 3 Tb. Each has its own separate power supply. I can switch one or the other or both drives on, then press the Port's power button on. The Port's power button is a press on, press off not a rocker switch.
2274705
I'm not sure...I don't leave it on when it's not in use. I only turn it on when I go to back up my files and then I power down after I'm done/eject.
2065162
Turns the computer on and off if you don't have a power button there's a that
560310
I believe some of Buffalo external drives have the auto-power-on/off feature. You can also use one of those smart power strips...
2048527
Yes it has an on off switch on the back between the power connection and the data connection
1616618
Yes, the power light is always on ... I do not believe their is any physical switch to turn the dock off.
385410
There is no power switch on the 3 TB drive. The disk will, however, spin down when the host machine is off.