Do both USB A connections have to be plugged into my computer or can I plug one into a different power source and the other into my computer
1441731
No, I use mine all the time with isound 16000mah battery backup it has 4 USB and up to 2.5 amp out got charging high end phones and tablets.
1061613
There are 2 power sources. You can either plug in to USB or the wall for it to work.
1669893
No, one cable is for data, one only provides power. It will work at the same speed as any other usb cable.
2061078
Yes, BUT the one I got requires that you use one of the two USB connections to use them. They apparently don't automatically connect directly to the computer.
1136674
You can connect two of these to your battery but I don't recommend charging the battery and using the USB at the same time.
987495
A power supply is not needed. Just plug in the 2 usb plugs to your computer. Power comes from the usb connections. If you don't have 2 usb connectors, try Radio Shack or Best Buy to match the plug needed.
1603290
no, you need the included ac adaptor(is a 12v output), usb is only 5v output.
1967425
one output port is for 2 Amp, the other is for 0.6 Amp, and the cable micro USB is for 2 Amp too. This info is from the case and in the manual. The USB cable shares the 2 Amp port outlet.
1419272
You will need to buy one seperatly. I bought a PCI one but you could use a USB one as well
698712
One should connect directly to your computer/Laptop and the other should be connect to adaptor.
1667377
Plug both USB connectors into the computer. This is a Y cable used to power the device as it draws more power than 1 USB connection can provide. Google "What is a USB Y cable used for" for more info.Hope that helps
473268
Yes one is for power the other power/data. I am running the drive on the data cable only. It did not run from the HUB without both plugged in, so I plugged the data cable direct to my laptop and it works just fine without the power cable.
925702
There is a miniUSB to dual USB cord that comes with it, which uses the power from the PC. It's a little longer than I'd like it to be, so I suppose you can substitute a shorter one. Not sure what the dual USB end would be for...
2211420
You need to plug both in because one transfers data and the other supplies power. If you can only connect one then you need a usb splitter.
366046
Yes, you need to use 2 usb ports for the extra power. The supplied usb Y cable has about 5 inches of slack between the plugs. If your laptop only has 1 usb on each side you will have to get an extension.
506709
No. It has to be plugged into the wall. The USB hookup is fine, but not necessary. You get two cables: 1. The Power Cord 2. The USB Connector I rarely use #2, but #1 is a must. =) Hope this helps. ~Mick
269125
USB, no AC mains needed. Needs a powered USB port, not an unpowered port. Many laptops have one or two of each.