809 of 882 people found the following review helpful
Works, but use caution,
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This review is from: Sabrent 4-Port USB 2.0 Hub with Individual Power Switches and LEDs (HB-UMLS) (Personal Computers)
I just received this item and it does work, but use caution when using it with external hard drives. It seems that any action, such as turning on or off a switch, as well as plugging in or unplugging a device from any of the other ports not currently in use causes a temporary power disruption and will throw your external hard drive off. In other words, you get the warning message that the drive was not properly disconnected. And as this can be bad for hard drives, be sure to properly eject your expansion & flash drives before turning off or on any of the ports and before adding or removing any connections.
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Showing 1-10 of 19 posts in this discussion
Initial post: Oct 21, 2013 8:33:59 PM PDT
A. Cantu says:
Posted on Oct 21, 2013 8:34:01 PM PDT
A. Cantu says:
Posted on Nov 16, 2013 8:39:18 AM PST
Last edited by the author on Nov 16, 2013 8:41:16 AM PST
Whom Ever says:
I would not recommend connecting an external hard disk via a usb hub. Why risk corrupting a hard disk (expensive, with probably valuable data) by using it with a cheapie hub? I have a keyboard/mouse, a phone charger and a printer connected by a hub, but the hard disk gets its own port. As for our "expert" A. Cantu, why do operating systems include an option like "Safely Remove Hardware" or "Eject"? Because they are not needed?
Posted on Nov 26, 2013 8:07:00 PM PST
The "Safely Remove Hardware" option exists in Windows when write caching is enabled for the drive. My understanding is that write caching is enabled for flash memory (like USB thumb drives and SD cards) and disabled by default for external, mechanical hard drives. Here's what the "Policies" tab on my external hard drive says:
(*) Quick Removal (default)
Disables write caching on the device and in Windows, but you can disconnect the device safely without using the Safely Remove Hardware notification icon.
( ) Better Performance
Enables write caching in Windows, but you must use the Safely Remove Hardware notification icon to disconnect the device safely.
So, unless you change that default option, you can unplug external, mechanical hard drives without worry. USB thumb drives and SD cards, though, I'm pretty certain that you have to eject or use "Safely Remove Hardware" first. I believe that an easy way to tell if you need to do that is to select and then right-click the drive in Computer and see if "Eject" is one of the menu options (it ought to be right below "Format"). If it's there, you should use it before removing the device; if it's not there, go ahead and remove the device.
In reply to an earlier post on Feb 4, 2014 4:29:45 AM PST
David Berrío says:
Maybe A. Cantu thinks life is too short to safely remove hardware.
In reply to an earlier post on Feb 21, 2014 12:47:53 PM PST
Last edited by the author on Feb 21, 2014 12:48:15 PM PST
A. N. O'Nemus says:
To A. Cantu:
That's smart. Just because you've been lucky doesn't mean it's a good idea. Would you advise riding a motorbike without a crash helmet, too, if you'd done so without an accident? Your "don't put that if you don't know what your saying" is just rude. Oh, and why would anyone would accept the opinion of somebody who appears to be entirely unaware of basic punctuation?
In reply to an earlier post on May 23, 2014 9:55:15 AM PDT
In reply to an earlier post on Oct 24, 2014 4:27:40 PM PDT
Andrew Kekelik says:
Posted on Nov 24, 2014 12:35:18 PM PST
I have an issue with my hub where my sabrent HD enclosure won't connect via the HUB, but connects directly.
I want to use a hub because I have a bunch of peripherals I use, so the hub is right under my monitor where I can easily connect/disconnect a USB 3.0 device. I guess I will just disconnect the hub then connect my enclosure. sigh.
In reply to an earlier post on Jan 4, 2015 2:33:44 PM PST
Markus Hoye says:
It might be that the hub can't supply enough power to the external drive. Might be able to use a Female A to Dual A Male Extra Power Data Y Extension Cable. It will take up two ports on the hub and add some extra cable length, but maybe this will help?
Amazon sells these cables for around $4 shipped.