I have 10 USB hard-drives attached to my hub. The hard-drives have individual power adaptors. Should I need to externally power the hub as well?
776842
I would bet what Richard is asking is "IF" I have 10 USB hard drives" - I posted a question myself and the question box is limited in how many characters it will allow in a question. The answer is that IF you have all ports used by devices that ALL have their very own AC adapters then yes, you would NOT need the Plugable's AC adapter to be installed to send and receive data from your computer to those drives. I have had 2 USB drives plugged in that have their own adapters and everything worked fine - I don't have access to 10 drives to completely test your request for you, but this answer based on what I could test will likely be correct for your purpose. Hope that helps!
776843
Why are you asking? You have it attached, you tell us if it works or not. I don't see why it shouldn't.
776844
I would bet what Richard is asking is "IF" I have 10 USB hard drives" - I posted a question myself and the question box is limited in how many characters it will allow in a question. The answer is that IF you have all ports used by devices that ALL have their very own AC adapters then yes, you would NOT need the Plugable's AC adapter to be installed to send and receive data from your computer to those drives. I have had 2 USB drives plugged in that have their own adapters and everything worked fine - I don't have access to 10 drives to completely test your request for you, but this answer based on what I could test will likely be correct for your purpose. Hope that helps! I would bet what Richard is asking is "IF" I have 10 USB hard drives" - I posted a question myself and the question box is limited in how many characters it will allow in a question. The answer is that IF you have all ports used by devices that ALL have their very own AC adapters then yes, you would NOT need the Plugable's AC adapter to be installed to send and receive data from your computer to those drives. I have had 2 USB drives plugged in that have their own adapters and everything worked fine - I don't have access to 10 drives to completely test your request for you,... » Read More I would bet what Richard is asking is "IF" I have 10 USB hard drives" - I posted a question myself and the question box is limited in how many characters it will allow in a question. The answer is that IF you have all ports used by devices that ALL have their very own AC adapters then yes, you would NOT need the Plugable's AC adapter to be installed to send and receive data from your computer to those drives. I have had 2 USB drives plugged in that have their own adapters and everything worked fine - I don't have access to 10 drives to completely test your request for you, but this answer based on what I could test will likely be correct for your purpose. Hope that helps! « Show Less
2261994
The power adapter is only required with 3.5 in (Desktop hard drives) the power adapter is not required for 2.5 in (Labtop hard drives) 2.5 in hard drives would be powered by the USB port of the computer.
1899940
Does the USB 2.0 port provide enough power for the external HDD? Or should I make sure to use an external HDD that has its own power source?
1077170
I don't see why not. I have 2 external drives running on mine. One powered by the Hub and the other by it's own power source. All 3 of yours have their own power source.
2082981
I can't answer your question from personal experience as I don't have 10 USB 2.0 hard drives.But at the moment there are 5 USB 2.0 hard drives running off my Satechi including one that does not have an external power supply. In addition my keyboard and mouse, a DVD drive with no external power supply, an Epson scanner, and an HP laser printer are connected to it. I see no reason why there couldn't be even 12 hard drives connected if each has its own power supply, provided the Satechi hub is being powered by its ac adapter.
1140718
USB ports can only supply limited DC power. Sometimes a two or three port passive (no power supply) USB hub can be useful, but don't expect a seven port hub to operate without a separate power supply. If you're inventive, you can construct a battery power supply with parts from Radio Shack so that you can occasionally operate away from utility power.
474735
No, I draws its power from the mother board. You may be thinking of USB hubs, which often require external power. Hope this helps.
1692952
Yes you do. This is the one. Generic Premium External Power Supply 5v 1A 2A (1000mA - 2000mA) AC/DC Adapter, Plug Tip: 1.35mm x 3.5mm x 7mm, for USB HUB and 2.5-inch HDD Enclosure
2151263
If you're going to use a powered USB hub (for external hard drives for example) then be aware that power can back feed from the USB port and cause memory card corruption. A seven port USB hub is available from thepihut.com which has been designed to prevent this from happening.
1867066
Do the external drives to be connected to the hub have their own power source? If they are intended to run off of the power of the hub, you may have problems. This is my speculation based on the note under the product description stating the product should not be used with WD passport hard drives. I have several of those, each 1TB, and they run off the power of the hub. Currently, they are plugged into USB 2.0 ports, but they are USB 3.0 compatible products used as "backwards compatible," and run very slowly with USB 2.0, but they run. With USB 3.0, there is evidently a reason they are not supposed to be used. So, I would say it depends on whether the external hard drives have their own power source and, specifically, if they are WD passport drives, the product information I saw said they should not be used with this hub.
1966743
NO! It is a powered hub. Having said that, I love these puppies. I've got 5 total in use and highly recommend them. (See my earlier review.) on USB 3 items, they'll draw power from their own power supplies and the computer itself, you DON'T ever want to take a chance of burning out the USB on your puter or the device (Like hard-drives) due to a low power situation, EVER!The plugable 7 port hub is lighted to let you know when the device is properly connected and powered, on each port.
2043310
The manufacturer says this: When the hub's power adapter is not connected, the hub is capable of running purely from bus power (from the host PC). When a hub reports itself as bus powered to the OS, the OS looks in the USB descriptors for every attached device, sees how much power the device reports that it needs reserved for it, and pops up a error (and possibly disables devices) if the total amount of power requested exceeds what a bus-powered hub in theory can count on pulling, which is 500mA for USB 2.0/1.1. We recommend always using the power adapter for best results.
1068008
12V 4A Power Adapter will provide a sufficient power for each port so you can run those external drives plugged into each port 24x7
608825
You need to plug both USB ends. This way, your external HDD will draw more power than from a single USB 2.0 port.
381876
This hub is underpowered by almost 45%. USB 2.0 ports should be able to pull 500mA, so with 7 ports the AC adapter should supply 3.5 Amps. It only delivers 2. Almost every powered hub on the market seems to be similarly underpowered.
1029522
Each USB output port can easily handle a USB 3 current load ( which is Greater than USB2 Current load. If your External Drive strictly operates from the USB3( or USB2) data cable that also carries power, it should be able to deliver and operate it. No harm will be done try it. ( Note many External large hard drives also require a separate external DC power connection. Check and refer to your Hard drive manual for it's specification and connections. Good Luck. BobNaz
377804
I use a powered usb hub. So I can plug many things into the hub and it has it's own power pack. Then I don't overload the onboard power from the pc.