There was a very informative article on this subject a couple of years ago in smart computing magazine. In short version 3 is around 10 times faster than version 2 although it will be far more expensive for a while unfortunately. The main purpose will be for external disk drives and other such storage devices. Things like keyboards and mice can't even make use of USB 2 speeds. In fact neither will sound cards and external CD/DVD burners make use of version 3 speed as there is a limit as to how fast a disk can be burned before errors start to creep in to the process.
USB 3 is only starting to come out here lately but don't expect all of the ports on any system to be version 3 compatible as it will be far too impractical and like I said costly as well. Now having said that I'd like to see just how fast such an animal would be sitting in front of me, I'll bet they smoke. David Ferrin ow...@jaws-users.com I've reached the age where 'happy hour' is a nap. -----Original Message----- From: blind-computing-boun...@jaws-users.com [mailto:blind-computing-boun...@jaws-users.com] On Behalf Of Niamh Sent: Wednesday, March 30, 2011 3:04 PM To: blind-computing@jaws-users.com Subject: Re: [Blind-Computing] USB 2 and 3 what are they? Jacob and Matthew, Thank you so much. I can now hold my own, I feel empowered. I new to being blind, and could not survive at work without this website and your knowledge and help. Many thanks niamh ----- Original Message ----- From: "Jacob Kruger" <jac...@mailzone.co.za> To: <blind-computing@jaws-users.com> Sent: Wednesday, March 30, 2011 5:18 PM Subject: Re: [Blind-Computing] USB 2 and 3 what are they? > From the Wikipedia page relating to USB (universal serial bus): > http://en.wikipedia.org/wiki/Usb > > under the history heading: > "The original USB 1.0 specification, which was introduced in January > 1996, had a data transfer rate of 1.5 Mbit/s.[5] The first widely used > version of USB was 1.1, which was released in September 1998. It > allowed for a 12 Mbit/s data rate for higher-speed devices such as > disk drives, and a lower > 1.5 Mbit/s rate for low bandwidth devices such as joysticks.[6] > > The USB 2.0 specification was released in April 2000 and was > standardized by the USB-IF at the end of 2001. Hewlett-Packard, Intel, > Lucent Technologies (now Alcatel-Lucent), NEC and Philips jointly led > the initiative to develop a higher data transfer rate, with the > resulting specification achieving 480 Mbit/s, a fortyfold increase > over the original USB 1.1 specification. > > The USB 3.0 specification was published on 12 November 2008. Its main > goals were to increase the data transfer rate (up to 5Gbps), to > decrease power consumption, to increase power output, and to be > backwards-compatible with USB 2.0.[7] USB 3.0 includes a new, higher > speed bus called SuperSpeed in parallel with the USB 2.0 bus.[8] For > this reason, the new version is also called SuperSpeed.[9] The first > USB 3.0 equipped devices were presented in January 2010.[9]" > > Jacob Kruger > Blind Biker > Skype: BlindZA > '...fate had broken his body, but not his spirit...' > > ----- Original Message ----- > From: "Matthew C" <matthew.care...@gmail.com> > To: <blind-computing@jaws-users.com> > Sent: Wednesday, March 30, 2011 5:10 PM > Subject: Re: [Blind-Computing] USB 2 and 3 what are they? > > >>I believe it has something to do with the speed of transmition of data. >>2.0 >> would be slower than say 3.0. >> >> -----Original Message----- >> From: blind-computing-boun...@jaws-users.com >> [mailto:blind-computing-boun...@jaws-users.com] On Behalf Of Niamh >> Sent: Wednesday, March 30, 2011 9:14 AM >> To: blind-computing@jaws-users.com >> Subject: [Blind-Computing] USB 2 and 3 what are they? >> >> Sorry to be useless here, but people keep throwing these things at me >> at work, and I haven't a clue what they are talking about. >> Because we are security conscious we have to back up certain files >> to off-line hard drives. >> Now people are talking about USB 2 and 3, what does this mean? >> Niamh >> For answers to frequently asked questions about this list visit: >> http://www.jaws-users.com/help/ >> Send any questions regarding list management to: >> blind-computing-ow...@jaws-users.com >> >> >> For answers to frequently asked questions about this list visit: >> http://www.jaws-users.com/help/ >> Send any questions regarding list management to: >> blind-computing-ow...@jaws-users.com > > > For answers to frequently asked questions about this list visit: > http://www.jaws-users.com/help/ > Send any questions regarding list management to: > blind-computing-ow...@jaws-users.com For answers to frequently asked questions about this list visit: http://www.jaws-users.com/help/ Send any questions regarding list management to: blind-computing-ow...@jaws-users.com For answers to frequently asked questions about this list visit: http://www.jaws-users.com/help/ Send any questions regarding list management to: blind-computing-ow...@jaws-users.com
