[Thinkpad] High Power USB Port

RWM RWM at RWMann.com
Sun Feb 4 09:08:16 CST 2007


Right; I use a hydra cable that draws power from two USB and/or the DIN 
connector at rear of the Ultrabase.

Rob Bell wrote:
> One can get a dual-ended USB cable that allows the drive to draw power 
> from two USB ports.  Often the USB drive enclosures come with these 
> types of cords.
> 
> Be aware that you can trash a disk if you try to run it in an external 
> enclosure with too little power.  I toasted a 2.5" laptop drive this way 
> a month or so ago.
> 
> Rob
> 
> RWM wrote:
> 
>>On my X22/23/24, I've had no trouble with external USB drives up to 40b, 
>>but the 7k 60Gb and 100Gb drives tend to require aux power.  Could be 
>>I've just been lucky.  Also, FWIW, I do note anecdotally that with USB 
>>drives and other accessories like Pocket PCs that the rear USB ports 
>>"seem to" dish more power than the side ports.  Never put a meter on 
>>them, though.
>>
>>- RWM
>>
>>Bruce Markowitz wrote:
>>
>>
>>
>>>The X20-24 series had low power ports, and would not run any kind of an
>>>external drive. The X31 has high power ports, as do all the T4X units I have
>>>seen. The RIGHT side port on the X41 is low power, the LEFT port will run
>>>external drives. Go figure.
>>>----- Original Message ----- 
>>>From: "Donald MacQueen" <dmacq at erols.com>
>>>To: "Thinkpad list" <Thinkpad at stderr.org>
>>>Sent: Saturday, February 03, 2007 10:49 PM
>>>Subject: [Thinkpad] High Power USB Port
>>>
>>>
>>>
>>>
>>>
>>>>I was in Circuit City today looking at a Sandisk USB drive.
>>>>
>>>>The box said that it required a "High Power USB Port".
>>>>
>>>>What is that, and how do I know if my TP has one?



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