Are there any HDs that run of USB/FireWire power?

[gozulin]

What the topic said. It's a pain to have to carry a power cord and brick for the HD. Not to mention needing an extra outlet.

 

[jackschmittusa]

Some 2½" drives work ok with usb power.

 

[Matthias99]

There are also some that use two USB ports to draw enough power. However, this can be a little iffier, as it depends on the USB controller being able to output enough juice.

 

[traderonline]

Originally posted by: Matthias99
There are also some that use two USB ports to draw enough power. However, this can be a little iffier, as it depends on the USB controller being able to output enough juice.

exactly. my hard disk uses 2 ports (earlier i thought it was used to boost the transfer performance)

 

[gozulin]

Thank you for answering my question.

 

[Zepper]

You NEVER want to depend on port power. One time it will work and another it won't. Desktop drives (3.5") require both 12 and 5V supplies - notebook drives 2.5" use just 5V. And you can cause problems with other devices on the port if you draw too much juice. Moral: Carry the brick AND grounded and non-grounded triple-taps for the AC outlets!

.bh.