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Usb 2.0?

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Original Message
Name: erg57
Date: April 20, 2004 at 05:01:57 Pacific
Subject: Usb 2.0?
OS: WinME
CPU/Ram: P4/256/1.8ghz
Comment:

I am pretty sure I know the answer to this question, but will hardware builr for USB 2.0 work with USB 1.0? Probably no backward compatibility, right? I am looking at getting a Flash Pen storage unit that lists working with USB 2.0. Has anyone experience with these working with older USB?


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Response Number 1
Name: dlb126
Date: April 20, 2004 at 05:23:56 Pacific
Reply: (edit)

Yes USB 2 components are backwards compatible, i've got a 128mb usb 2 version i use for college, and it works with the older computers at college, but will just be slower accessing files on the computer with usb 1.


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Response Number 2
Name: RockyBalboa
Date: April 20, 2004 at 05:33:32 Pacific
Reply: (edit)

well for a flash pen yes im sure it will work its only really things like certain printers and hard drives that use usb 2.0 that demand the fast data transfer but usb 1.0 is still pretty fast, you can also buy a usb 2.0 pci card for no more than £20 probably cheaper if you look around


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Response Number 3
Name: erg57
Date: April 20, 2004 at 05:53:30 Pacific
Reply: (edit)

Thanks friends. I am buying one for my papa for his birthday and i don't want to ask him what his USB spec or he will knwo what I am up to is so I am assuming older, though I am sure his is 2.0.

If its slower, its slower--as long as it works.

Thanks again


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Response Number 4
Name: angrymen2001
Date: April 20, 2004 at 08:23:13 Pacific
Reply: (edit)

USB 2.0 cards aren't that expensive anyways if an update is needed

When all else fails, beat the %*#$! out of it!!!


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Response Number 5
Name: erg57
Date: April 20, 2004 at 09:02:36 Pacific
Reply: (edit)

I was thinking that too. I have 1.1 on my machine and it may be time to make a change


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Response Number 6
Name: angrymen2001
Date: April 20, 2004 at 10:43:08 Pacific
Reply: (edit)

The only time you need a change is if you have a 2.0 device. A 2.0 card will not make a 1.1 device any faster (in case you didn't know that).

When all else fails, beat the %*#$! out of it!!!


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Response Number 7
Name: Tubesandwires
Date: April 20, 2004 at 10:52:38 Pacific
Reply: (edit)

"...will hardware builr for USB 2.0 work with USB 1.0..."

Maybe. Usb 2 is supposed to be backward compatible with Usb 1.x devices, but it may not apply the other way round in some cases.
Some Usb 2 devices are also Usb 1 compatible - they just use lower maximum data speeds. This should be in the specs for the device.

As far as your own computer goes -

Usb 2 is supposed to be backward compatible with Usb 1.x devices, but in practice this compatibility is not 100% - some Usb 1.x devices will not work in Usb 2 ports, but work fine in Usb 1.x ports. If I were you I would keep the Usb 1.x if you add the Usb 2 - they should use the same IRQ, so you won't need any additional IRQ's.


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