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WillRogers
Guest
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 Posted: Wed Dec 17, 2003 7:26 am Post subject: USB 2.0 and USB High Speed |
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I was looking a buying a scanner and have seen that there are scanners that
support USB 2.0 "Full-Speed" and those that support USB 2.0 "High-Speed."
What are the performance differences here? Are they that much different?
Now, I have a 700X system bought in 2/2002 and I am wondering if my system
supports the "High-Speed" or not? Is the "High-Speed" issue dependent on
the connected device or the system hardware that "High-Speed" devices
connect to? Or maybe the motherboard software the engages both issues.
Anybody???
Or a suggested product that is reasonably priced that can accomplish this on
my 'puter. Thanx |
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Ben Myers
Guest
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| Posted: Wed Dec 17, 2003 8:31 pm Post subject: Re: USB 2.0 and USB High Speed |
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AFAIK, high speed and full speed USB are one and the same, different variations
on marketing buzz. A USB 2.0 scanner should work just fine on a 700X.
.... Ben Myers
On Wed, 17 Dec 2003 01:26:24 GMT, "WillRogers" <WillRogers@nospam.com> wrote:
| Quote: | I was looking a buying a scanner and have seen that there are scanners that
support USB 2.0 "Full-Speed" and those that support USB 2.0 "High-Speed."
What are the performance differences here? Are they that much different?
Now, I have a 700X system bought in 2/2002 and I am wondering if my system
supports the "High-Speed" or not? Is the "High-Speed" issue dependent on
the connected device or the system hardware that "High-Speed" devices
connect to? Or maybe the motherboard software the engages both issues.
Anybody???
Or a suggested product that is reasonably priced that can accomplish this on
my 'puter. Thanx
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Quaoar
Guest
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| Posted: Wed Dec 17, 2003 9:08 pm Post subject: Re: USB 2.0 and USB High Speed |
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ben_myers_spam_me_not @ charter.net (Ben Myers) wrote:
| Quote: | AFAIK, high speed and full speed USB are one and the same, different
variations on marketing buzz. A USB 2.0 scanner should work just
fine on a 700X.
... Ben Myers
On Wed, 17 Dec 2003 01:26:24 GMT, "WillRogers"
WillRogers@nospam.com> wrote:
I was looking a buying a scanner and have seen that there are
scanners that support USB 2.0 "Full-Speed" and those that support
USB 2.0 "High-Speed." What are the performance differences here?
Are they that much different? Now, I have a 700X system bought in
2/2002 and I am wondering if my system supports the "High-Speed" or
not? Is the "High-Speed" issue dependent on
the connected device or the system hardware that "High-Speed" devices
connect to? Or maybe the motherboard software the engages both
issues. Anybody???
Or a suggested product that is reasonably priced that can accomplish
this on my 'puter. Thanx
|
The USB standard is in a state of flux, with vendors often using their
own interpretation of the words "full" and "high". At one point, "full
speed" referred to USB 1.1 operating in a USB 2 port at the 12Mb/s
maximum of USB 1.1. "High speed" referred to the standard maximum speed
of USB 2, 480Mb/s. The USB organization has a statement to the effect
that one should determine what is being stated by a vendor from the
vendor itself if there is any doubt about what is being advertized.
This is important since some vendors were using the term "USB 2
compliant" to mean USB 1.1 would work, while customers were interpreting
it as "USB 2".
The USB standards organization still recognizes that Full Speed and Low
Speed refer to USB (formerly known as USB 1.1) transfer rates, and
High-Speed refers to Hi-Speed USB (formerly known as USB 2) at its
maximum transfer rate.
http://www.usb.org/info/usb_nomenclature
[quote]
The USB-IF's naming and packaging recommendations for low- or full-speed
USB products, as listed on this web site state that such products can
carry only the basic version of the USB logo, which simply states
"Certified USB." We state clearly that manufacturers should avoid using
terminology such as USB 2.0 Full Speed, Full Speed USB or USB 2.0. These
formal recommendations were published to the USB-IF membership and
posted on this web site in August 2002.
[end quote]
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PC Gladiator
Guest
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| Posted: Wed Dec 17, 2003 10:15 pm Post subject: Re: USB 2.0 and USB High Speed |
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High speed is 480.0 Mb/s (USB 2.0)
Full speed is 12.0 Mb/s
Low speed is 1.5 Mb/s
<ben_myers_spam_me_not @ charter.net (Ben Myers)> wrote in message
news:3fe0686f.3782310@news.charter.net...
| Quote: | AFAIK, high speed and full speed USB are one and the same, different
variations
on marketing buzz. A USB 2.0 scanner should work just fine on a 700X.
... Ben Myers
On Wed, 17 Dec 2003 01:26:24 GMT, "WillRogers" <WillRogers@nospam.com
wrote:
I was looking a buying a scanner and have seen that there are scanners
that
support USB 2.0 "Full-Speed" and those that support USB 2.0 "High-Speed."
What are the performance differences here? Are they that much different?
Now, I have a 700X system bought in 2/2002 and I am wondering if my
system
supports the "High-Speed" or not? Is the "High-Speed" issue dependent on
the connected device or the system hardware that "High-Speed" devices
connect to? Or maybe the motherboard software the engages both issues.
Anybody???
Or a suggested product that is reasonably priced that can accomplish this
on
my 'puter. Thanx
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