[access-uk] Re: USB connectivity

  • From: "George Bell" <george@xxxxxxxxxxxxxxxxxxx>
  • To: <access-uk@xxxxxxxxxxxxx>
  • Date: Fri, 30 Jul 2010 10:47:38 +0100

Hi Andy,

Here is an FAQ from Western Digital's web page.  I think this pretty
well sums it all up.  It should work.

George.

Using USB 2.0 drives with USB 1.1 controllers or hubs 
 
  Question 
  Can I use my USB 2.0 drive on USB 1.1 controllers or hubs? 
 
  Answer 
  USB 2.0 drives can be connected to USB 1.1 controllers or hubs.
However, they will only run at USB 1.1 rates. To expand USB 2.0 host
ports to support more devices, be sure to use a USB 2.0 compliant hub.
A USB 1.1 hub can only function at slower USB 1.1 speeds. A USB 2.0
hub will allow USB 1.1 devices to run at USB 1.1 rates while USB 2.0
devices, such as WD drives, will operate at USB 2.0 speeds. 

Note 1: USB 2.0 hubs will not improve the performance of USB 1.1
devices.
Note 2: WD recommends against using a USB 3.0 drive on a USB 1.1 hub,
switch, or controller.



-----Original Message-----
From: access-uk@xxxxxxxxxxxxx [mailto:access-uk@xxxxxxxxxxxxx] On
Behalf Of ANDY COLLINS
Sent: 30 July 2010 10:26
To: access-uk@xxxxxxxxxxxxx
Subject: [access-uk] Re: USB connectivity

Hi George - You asked for the make of the drive my friend bought, it's
the 
WD Elements 25g portable drive, 2.0 USB; that's all he could tell me;
not 
sure that Western Digital have the best reputation, but should be ok 
wouldn't you say?

Andy
----- Original Message ----- 
From: "George Bell" <george@xxxxxxxxxxxxxxxxxxx>
To: <access-uk@xxxxxxxxxxxxx>
Sent: Tuesday, July 27, 2010 7:47 AM
Subject: [access-uk] Re: USB connectivity


> Hi Andy,
>
> Best way is to find out the make and model of the drive, and we'll
> look up the technical specs for it.
>
> Take a look at FAQ 8 at http://www.everythingusb.com/usb2/faq.htm
> which explains that, "You may have heard that USB 2.0 is
> "backward-compatible" with USB 1.0/1.1 (Full-Speed USB). While
that's
> true, USB 1.1 is also forward-compatible with USB 2.0."
>
> I suspect that he may perhaps need to go into Control Panel,
> Administration, Computer Management, Storage, Disk Management, and
> partition and format the drive.
>
> The other thing to check is the XP Service release installed.  Right
> click on My Computer and select Properties.  It should tell you in
> that dialog. He should ideally be on at least XP SP3 which should
> provide more up to date USB drivers.
>
> George.
>
> -----Original Message-----
> From: access-uk@xxxxxxxxxxxxx [mailto:access-uk@xxxxxxxxxxxxx] On
> Behalf Of ANDY COLLINS
> Sent: 26 July 2010 23:50
> To: access-uk@xxxxxxxxxxxxx
> Subject: [access-uk] Re: USB connectivity
>
> Hi George - have to say, this is what I thought to be the case. I'm
> trying to help a friend, who is running an oldish XP machine,
probably
> with 1.1 USB ports, but not sure yet, cos don't know where to look
in
> control panel for confirmation? He's bought an external HD, plugged
it
> in, but it won't play.
> Firstly he got an error warning saying that the software was
untested
> and to continue with the installation might cause damage; assuming
> this was the usual Microsoft scare mongering, he continued anyway,
but
> apparently, the drive isn't showing up in My Computer.
>
> Any observations?
>
> Thanks -
>
> Andy
> ----- Original Message -----
> From: "George Bell" <george@xxxxxxxxxxxxxxxxxxx>
> To: <access-uk@xxxxxxxxxxxxx>
> Sent: Monday, July 26, 2010 11:39 PM
> Subject: [access-uk] Re: USB connectivity
>
>
>>I hate to disagree, Chris, but you can usually connect USB 2 devices
>> to a type 1 port, but will only get USB 1 speed.
>>
>> George.
>>
>> -----Original Message-----
>> From: access-uk@xxxxxxxxxxxxx [mailto:access-uk@xxxxxxxxxxxxx] On
>> Behalf Of chris hallsworth
>> Sent: 26 July 2010 23:04
>> To: access-uk@xxxxxxxxxxxxx
>> Subject: [access-uk] Re: USB connectivity
>>
>> No. However a USB 1.1 device will work on a USB 2.0 port. They are
>> backwards compatible. But not the other way round.
>>
>>
>> Signed by Chris Hallsworth
>> E-mail and Facebook: christopherh40@xxxxxxxxxxxxxx
>> MSN: ch9675@xxxxxxxxxxx
>> Skype: chrishallsworth7266
>> Twitter: http://twitter.com/christopherh40
>>
>> On 26/07/2010 22:58, ANDY COLLINS wrote:
>>> Hi all -
>>>
>>> Will a high-speed 2.1 USB external hard drive run on an XP
computer
>> whose ports are the old 1.1 speed? -
>>>
>>> Andy
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