What is the difference between a "power bank" and a "power hub"?
376616
I use the bank to charge multiple devices at once too. I have found no real difference. I suggest you save the money and buy the older (bank) one. I still use mine daily and love it!!!
376617
With a power bank you can charge many kinds of devices, one at a time. A power hub is a power bank that can charge more than one device at a time.
1727980
This device is powered by the USB port and require more power than a notebook USB can supply, so a powered USB hub is needed to obtain the best performance with a notebook.
1787321
It depends on how many drives you will use simultaneously. If it is only one or even two, you will have no problem powering them. However if you will use more than two drives, you should consider buying an externally powered USB hub.
1250574
one for power and the other one is for a usb to ac adapter. if you dont want to siphon off power from your laptop.
434836
You must always use the power plug for USB hubs. Any product claiming to be a bus powered hub would be violating the USB specifications. There is a specified minimum current for each hub port and a specified maximum current for a bus powered device. A hub must be able to supply the minimum required power to each of its ports simultaneously. If it were to be bus powered, the only source of the power would be from the port that is driving it. The sum of the minimum current for the hub's output ports will exceed the specified maximum device current that the hub would attempt to pull from the driving port. You must always use the power plug for USB hubs. Any product claiming to be a bus powered hub would be violating the USB specifications. There is a specified minimum current for each hub port and a specified maximum current for a bus powered device. A hub must be able to supply the minimum required power to each of its ports simultaneously. If it were to be bus powered, the only source of the power would be from the port that is driving it. The sum of the minimum current for the hub's output ports will exceed the specified maximum device current that the hub would attempt to pull from the... » Read More You must always use the power plug for USB hubs. Any product claiming to be a bus powered hub would be violating the USB specifications. There is a specified minimum current for each hub port and a specified maximum current for a bus powered device. A hub must be able to supply the minimum required power to each of its ports simultaneously. If it were to be bus powered, the only source of the power would be from the port that is driving it. The sum of the minimum current for the hub's output ports will exceed the specified maximum device current that the hub would attempt to pull from the driving port. « Show Less
352172
The USB hub doesn't need one for most devices, the AC adapter that comes with can also easily be replaced with a universal one you buy locally.I am using it just with the USB power fine.
788738
Not in my opinion. You ned a Hub with electric power, because with the energy of the laptop only can connect 1 device , if you connect 2 devices and one of them is USB 3 , the device falls . I use 2 to 4 devices (Blu ray drive, Hard disk external) and they only work with a Hub with electric power. With this Satech Hub they don't work . Is a pitty because is very beautiful, but doesn't work , I'm sorry
1694990
Only if you want to provide power to a USB device that you plug into the hub.
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.
2043311
No, it does not. It won't function as a hub without the power source either (at least not to devices that require power, eg, my WiFi card)
165461
This is strictly USB hub. I have been able to use the ports for both power and data using a Windows computer. I have been very happy with this hub.
343796
To my knowledge, the larger ones (1TB +) seem to have external power. The smaller ones (less than 1TB) are just powered by USB. Those are the ones I have anyway.
2115001
It includes a micro-usb cord that powers the device from your computer and transmits data from the built in USB hub. You can buy the extra power adapter, but it is not necessary.
1092137
If you are going to want to charge devices, you'll have to get a power adapter to use with the hub. Right now it will split the 5V coming from the laptop into however many devices are plugged in.
2080607
I'm pretty sure the only difference is the charger supplied (not the battery). The charger is made differently than the typical "wall wart" charger to be more "energy efficient".
581946
it gets power through USB. So, when you connect to a computer or a powered usb hub, it works. When you don't, you need to connect to the "charger box".
1694991
It appears to have two version. The version I received has same USB 3.0+2.0 ports like in the picture. But the DC adapter that mine came with has detachable connector to the USB hub but it only has one output 2.1A which is mini DC connector head. Doesn't use USB cable to charge the USB hub. The DC adapter shown at Amazon has two DC output connectors using USB cable to connect to the USB hub. If you refer the DC adapter shown at Amazon, you may ended up getting a different version like what I received.