[LAU] usb-2.0 harddisc

david gnome at hawaii.rr.com
Sat Aug 4 00:17:18 EDT 2007

I've run into PCs whose USB ports don't really supply the full nominal 
USB power voltage (500mA). A USB2 drive housing I have here comes up as 
USB1.1 unless I use a powered hub or external power supply for the drive 

Also, older notebook hard drives can quite easily use 500mA just for the 
drive - leaving nothing for the interface circuitry. And housings for 
bigger drives (3.5" drives, for instance) almost always require an 
external power supply. You can usually find out how much power a hard 
drive requires by checking the manufacturer's label.

Michal Seta wrote:
> I have Vantec NexStar SX enclosures for my old laptop 2.5" IDE
> hardrives.  I haven't used those drives for recording (yet, but i
> don't really use my computer for recording) but I have been happy with
> the performance.  And they can be USB powered, too.  The only drawback
> is that the aluminum is high-polish and fingerprints appear as soon as
> you take it out of the wrapper.  They come with USB cable that has a 1
> port hub attached, 4 screws for your hd + a mini screwdriver and a
> leather-like case.  I think they are a good deal for ~$20.
> http://www.vantecusa.com/ (sorry, but these pages are flash+gfx
> loaded, not much text...)
> ./MiS
> On 8/3/07, Mark Knecht <markknecht at gmail.com> wrote:
>> On 8/3/07, Dragan Noveski <perodog at gmx.net> wrote:
>>> Mark Knecht wrote:
>>>> USB 2.0 is plenty fast for recording audio tracks. you should not have
>>>> a problem with that at all, assuming it's a good disk and the system's
>>>> USB implementation is done correctly.
>>>> Just mount the drive and run hdparm -tT to get an idea of the drive's
>>>> speed. I'm sure it will be fine.
>>>> Cheers,
>>>> Mark
>>> mark, very much thanks for the response!
>>> i think i ll go for a combination of an ata-laptop-drive, with this
>>> usb-case-adapter for it.
>>> that seems cheap, and i do not need an extra power chord for the
>>> external drive than - which is important for me, since everything runs
>>> on solarpower, 12Vdc here.
>>> cheers,
>>> doc
>> Sounds nice not to have the power cords. I've got 3 Firewire drives
>> and often get tired of all the power connections. Each drive has a
>> different power supply and I've got to get them matched up correctly.
>> A small drive that gets power from the bus would be far nicer for fast
>> setup and tear down.
>> Good luck.

gnome at hawaii.rr.com
authenticity, honesty, community

More information about the Linux-audio-user mailing list