-=PCTechTalk=- Re: Connecting external hard drives
- From: "Don101" <don101@xxxxxxxxxx>
- To: <pctechtalk@xxxxxxxxxxxxx>
- Date: Sun, 6 Jul 2008 19:38:54 -0400
Roger,
A powered hub plugs into the computer via USB cable and also plugs into a
convenient electrical outlet. Data flows to your device from the computer
and the power flows from the wall socket.
The only specs you really need to worry about is USB 2.0.
A decent one should run about 20 bucks or so.
Don
----- Original Message -----
From: "RMB White" <roguer@xxxxxxxxxx>
To: <pctechtalk@xxxxxxxxxxxxx>
Sent: Sunday, July 06, 2008 4:41 PM
Subject: -=PCTechTalk=- Re: Connecting external hard drives
> Don !
>
> Very many thanks for your prompt and helpful reply.
>
> I have no knowledge of what a "powered" hub is, but shall go out and
> look for one.
>
> Are there any criteria, specifications or methods of use I should look
> out for please??
>
> Roger W
>
> On 7/07/2008 12:11 a.m., Don101 wrote:
>> Roger,
>> Any power supply can only supply so much power. In a laptop that amount
>> is
>> as small as possible to minimize heat. That means there is not a lot of
>> extra power for extra devices.
>>
>> If you have more devices plugged in than USB ports built in then it is
>> likely a powered hub would better meet your needs. This is especially
>> true
>> for some Maxtor (and maybe other brands) 2.5 inch hard drives because
>> they
>> require two USB ports and draw power from both. On my Maxtor 250GB they
>> are
>> labeled "Power" and "Power + Data".
>>
>> Power demands from USB devices can also be a problem with desktop
>> computers.
>> Especially older ones with a smaller power supply. I encourage my
>> customers
>> to use a powered hub for anything that draws more power than a keyboard,
>> mouse or card reader and to always use a powered one when it will occupy
>> the
>> last available port on the computer/laptop.
>>
>> Don
>>
>>
>> ----- Original Message -----
>> From: "R. M. B. White" <roguer@xxxxxxxxxx>
>> To: "pc techtalk" <pctechtalk@xxxxxxxxxxxxx>
>> Sent: Sunday, July 06, 2008 5:35 AM
>> Subject: -=PCTechTalk=- Connecting external hard drives
>>
>>
>>
>>> Now that my new 250G Seagate is getting full of copies of copies of
>>> copies, I have just got a 500G Maxtor as well.
>>>
>>> However they each (as well as my Brother MFC 260C Multi-function
>>> printer/fax/copier) want to be connected to the BACK of my laptop, and
>>> they regard connection with the FRONT or via a USB hub as dangerous.
>>>
>>> I have a fairly standard hub but understand from something I have read,
>>> that it may need to be a POWERED hub to overcome this danger.
>>>
>>> Would appreciate any helpful coments please (or even derogatory)
>>>
>>> Roger W.
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