Does it require an external power source or is it powered off the USB port??
187399
Silicon Power 1TB drive is powered from the USB port to which it is connected.
187400
Nope. It works without any external power source and yes it works just fine.
2106652
Ron....no, the hard drive is a plug-n-play, no external power source needed.
2149499
Just USB powered but I haven't had any issues with it. Albeit, I only use it on rare occasions for work
353981
Apparently it is powered exclusively from the USB port itself, not too certain on wattage however. There is a s/pdif out and in, and a 3.5mm line in (I use a red/white composite cable converter to play any console games). I believe the software that runs it is strictly PC, but I have no certainty that it will function in this manner.
2041229
It is not USB powered, you plug it into a regular power outlet. It does come with a carrying case for easy transport, though. It's larger and heavier than most "portable" drives. Good drive.
1416837
Although the user manual does not say that it needs a power source, it came with a USB cable. I was not sure why, later I noticed that the device has a mini USB port on the side. I had it connect to my Cable box that has a USB port. The device did not work properly (it kept flickering) without using USB cable. It works perfectly now.
696785
It is USB Powered, just plug it in to the USB port and you are Scanning. :)
317345
It receives it's power through the USB only, there are no external power adaptors.
1188532
No the model I purchased did not require external power. I needed to convert HDMI from a new laptop to VGA to supply video to an older but still very functional larger fixed monitor. It worked fine. If you have a similar need be sure to check the monitor, some have a dual input VGA and PCI which gives you a choice in the converter/cable that you choose.
1243229
I'm not sure I understand your question. It is an electronic device so it needs a power source. The battery is built-in, and can be recharged through a USB port on a computer or laptop.
1100604
No, to power it, it came with a USB cord that can connect into a USB port on a computer or USB wall adapter.
1399045
Completely powered via USB. Has a double USB cable to plug into two USB ports should your computer not supply enough power. Works like a champ.
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.
1323538
the device is USB Powered. Just plug into available USB port on you computer and go to work
1305610
If you've not looked at the "owners manual" for this item please do a google search and find one. The short answer to that question is none, there's not an external power source, it's 12v and powered by the motherboard connection.
1690709
Alex, you asked "Is this drive fully portable, or does it need a power cord?" This external drive is fully portable and needs no external power source. You have one USB to USB connection to your PC or laptop, etcetera, which when connected is assigned a driver by Windows and power is supplied by that one connection in addition to communicating with your PC as an external drive.
586146
No, it needs a power source. Ac/ DC connection. No headphone connection either