Will it power a usb hard drive or will I need an additional power source for the drive?
1805408
It will power a portable USB Hard drive. I run this configuration in hotels, where I can power the MacAlly simultaneously through its separate miniUSB charging port. While it can run a drive purely off its internal battery, but don't expect much in battery duration.
1805409
It powers my Toshiba portable external hard drive. Battery power is probably limited bc it is pushing power to the HD but it works. If I'm using it for long periods of time, I plug the macally mobile into a charger using it's USB cord - it works well that way.
1805410
Yes, it will for a limited time (battery). For a longer time you have to use USB charger (or a computer), micro USB in Macally, cord included.
1805411
Hi. Thaïs product can power à USB hard disk drive 2,5 inch but not 3,5 inch because these one must be powered by external power. Sorry for my poor english. ;-)
1805412
Yes it has a battery is rechargeable and last quite a few hours. You put the hard drive in and a close the case and you're good to go.
1416475
External, AC adapter. It's a full sized, 3.5", hard drive with a full set of spinning platters inside. I'm not sure if it could even be used in a context where the device it's in would run off the power from a USB port....perhaps, but in this case, it's not that kind.
1364588
I believe it does require a special one. The difference is the computer USB cable has two plugs, one for the drive, and the other for the power. Perhaps one may be available through Cyberguys. http:/www.cyberguys.comLeo
2020844
Not sure, depends on your source USB port. To be sure, I would purchase a "powered" USB hub to connect your drives.
1787322
i plug in a couple of external drives w/out power source all the time. works just fine. don't know if it'll power more than 2.
1273332
It is "powered" through the USB port, so expect it to provide only as much power downstream as it receives. In particular, it may not power multiple of those portable hard drives that get power through USB, but it probably will power a single one, depending on how much power it receives from the port it is plugged in.
759760
It does not come with a power source. yes their is two spots for disc drive
1832724
all you need is a 12vDC 2amp power supply. i would take the drive with you to make sure the plug fits it
406132
Mine did, external drives normally need an external power source. This was for an older WD MyDrive 500gb.
2090203
It does not require any addition power. It works with external Esata drives that don't require power (pocket drives) If you have a larger external 3.5 inch drive it should have its own power supply. I have a 1tb 2.5 inch Esata and it works just like a USB drive plug and go. Also I have just upgraded the system I use the card from Win XP to Win 7 and it was flawless. everything was totally automatic. Hope this helps, PS I am currently considering purchasing another one for a different system. I have been totally happy with the card The price performance ratio on this card is great.
2261998
I suppose that it supplies power to the drive. My guess is that the laptop drive I'm using only needs 5V and that it is getting enough current from the USB port. I do not know how much power is really needed or if this usage is correct; I just observed that it works for me.
1607610
The Prestige External hard drive is plugged an electrical outlet, an adapter which is rated at 12V and 1.5A. USB is specified to provide 5V only. It also has a power on/off switch which I find handy.
1677538
I didn't need the power cable when using one external hard drive but I did need to hook up the power cable when I added a second external hard drive to the second USB 3.0 port on the card. The power coming through the card from my Dell E5510 notebook computer was not sufficient to power the two external hard drives (one was a Western Digital My Passport and the other was a Seagate Backup Plus).
1389625
In order to get this unit to work with my hard drive I had to use an external power supply so i would have to think that you would be better off with a direct connection to the computer for charging any device. Hope this helps.
1111844
There are one cable USB to an -Mini USB (http://en.wikipedia.org/wiki/USB) in the packet. Its Powered by the USB, no need for extra power.
1091307
No external power required. Only needs a USB port with enough power. Most standard USB 3 ports should be adequate.
2090202
No additional power to the card is needed as both esata and sata drives have separate power connectors. This is not a USB card.