Does this require the power adapter if I use USB 3.0?
1679856
Yes dave I've always used the power adapter. I've never tried it without. Sits on my desktop plugged into my battery backup.
1571722
No, only one cable and one port is necessary. The USB 3.0 is also backward compatible with the 2.0
95052
Yes. The manual clearly states that external power is required at all times. USB 3.0 ports are supposed to provide up to 900 mA, each, so requiring an external power source for hubs is pretty much written in stone. Also, it is worth noting that older computer systems probably do not have USB 3.0 ports built into them. My own laptop is a 2011 ThinkPad, and I had to buy an adapter card to get the support.
183575
You can buy any 2.0 USB cable here on amazon. Yes it comes with the power adapter for the hub when i bought mine.
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?
1776477
Yes have to buy the adapter. But it even says os on the box. I didnt use it tho.
1355779
Yes the connector for usb 3.0 is a very different 20 pin connector from the psu power cable. Your mobo has a dedicated connector in its spec for USB 3.0 that will work just fine.
2175093
Yes you will need one in order for the USB 3.0 connection on the panel to plug into and to work.
44833
The listing is Various. UNITEK USB 3.0 Hub 4 Ports with 5V 4A Power Adapter Power Switch USB 3.0 cable should have a power adapter. That man may buy another one bus-powered hub which don't have a power adapter.
443941
The unit comes with a power adapter but you don't need to use it. I have a ext HD, wireless mouse/ keyboard combo controller and my UPS USB cable hooked up to it without the power adapter plugged in.
81484
Is the power adapter necessary for this drive or will it run off he computer battery if needed?
2262000
I think there's one very important point that no one has mentioned: USB 3.0 provides 0.9 amps while USB 2.0 provides 0.5 amps. Keep that in mind. BTW, 3.5" always needs the power adapter; 2.5" USUALLY (not always) is not required.
1089887
Yes, the adapter is required. I have both 3.0 external hard drive and 2.0 flash drive connected to the hub and neither is connected when the adapter is removed. I didn't know that either from the info provided on the product page. The hub works well but I would have preferred a unit that didn't require the adapter to be used. Also, the adapter cord is not very long so you'll need to have your computer fairly close to an outlet. However, it really does work well.
2261996
If the drive is a 5400 rpm or solid state then no power adapter required. If its a 7200 rpm or faster, power adapter is required.
333862
No external power source needed. Just simply plug in the 3.0 USB to the PC and you are set. :)
1416836
Yes. It doesn't need a power adapter but it will need to be plugged into a power source via the cable that comes with it.
1127856
It is 3.0. I suspect the box image is from a previous model. Interesting note, the USB connection is split; 1 for USB 3 and 1 for power. If you plug into the USB 3.0 port you do not need to plug in the other connection for power. The USB 3.0 powers it just fine. The extra power connection is for 2.0 connections I believe.