[Thinkpad] Anybody know? Is R30 USB 1 or 1.1?

Bruce Markowitz scosgt at worldnet.att.net
Sat Nov 3 17:28:38 CDT 2007


As I recall, R30 was the cheaper equivalent of the T30. As such it would
probably have 1.1
----- Original Message ----- 
From: "Computer Services" <canyonlands at gmail.com>
Cc: <thinkpad at stderr.org>
Sent: Saturday, November 03, 2007 4:23 PM
Subject: Re: [Thinkpad] Anybody know? Is R30 USB 1 or 1.1?


> Use the type number to figger out the build date.  If it is built after
> April 18, 2001, it is 2.0 according to old notes I have from IBM. If it is
> built before that, it is usually, but not always 1.1
>
> On Nov 3, 2007 8:03 AM, Scott Matthews <scott at turnstyle.com> wrote:
>
> > Thanks!
> >
> > I had been thrown off by the Wikipedia entry that stated USB 1.0 was 1.5
> > Mbit/s vs. USB 1.1 at 12 Mbit -- and that's why I was trying to figure
out
> > whether the X20/R30 supported 1.0 or 1.1 -- lesson learned!  ;)
> >
> >
> >
> >
> > > Yes.  From the linked article:
> > >
> > > *Did the specification for the host controller change from version 1.0
> > > to 1.1? *
> > >
> > > NO.  The host controller portion of the USB specification is unchanged
> > > in the 1.1 revision.  As part of a complete USB specification,
> > > specification 1.1 included the UNCHANGED 1.0 USB host controller
> > > specification.  There is NO difference in the host controller
> > > specification in version 1.1.
> > >
> > > Which backs up my statement that the host in 1.0 & 1.1 are both
capable
> > > of 12Mbit/s speeds, and it is the device that is the determining
factor.
> > > I recall back in the day that some webcams were 1.0 and others 1.1,
and
> > > only the 1.1 cams were able to do 320x240 at 30fps.
> > >
> > > -------- Original Message --------
> > > Subject: Re:[Thinkpad] Anybody know? Is R30 USB 1 or 1.1?
> > > From: "Scott Matthews" <scott at turnstyle.com>
> > > To: "Jonathan Kelly" <jcrkelly at gmail.com>
> > > Date: 11/3/2007 9:48 AM
> > > > I just found this:
> > > > http://www.usbman.com/Guides/USB_version1.0_version1.1.htm
> > > >
> > > > Would you similarly interpret this to mean that there is no
difference
> > > > between USB 1 and 1.1 on the ThinkPad side?
> > > >
> > > > -Scott
> > > >
> > > >
> > > >
> > > >
> > > >> I'm pretty certain from personal past experience that any
1.0interface
> > > >> is capable of 12Mbit/s.  The question lies with the device being
> > > >> connected, as to whether it is a low of full speed device.
> > > >>
> > > >> -------- Original Message --------
> > > >> Subject: Re:[Thinkpad] Anybody know? Is R30 USB 1 or 1.1?
> > > >> From: "Scott Matthews" <scott at turnstyle.com>
> > > >> To: "Jonathan Kelly" <jcrkelly at gmail.com>
> > > >> Date: 11/3/2007 9:34 AM
> > > >>
> > > >>> hmm, also from Wikipedia (http://en.wikipedia.org/wiki/Mbit/s):
> > > >>>
> > > >>> Interface and device speeds:
> > > >>>     USB, Low speed (1.0) -- 1.5 Mbit/s -- 0.18 MB/s
> > > >>>     USB, Full speed (1.1) -- 12 Mbit/s -- 1.5 MB/s
> > > >>>     USB, Hi speed (2.0) -- 480 Mbit/s -- 60 MB/s
> > > >>>
> > > >>> And the current version of Wikipedia's USB page
> > > >>> (http://en.wikipedia.org/wiki/Usb):
> > > >>>
> > > >>> USB supports three data rates:
> > > >>>     A Low Speed (1.1, 2.0) rate of 1.5 Mbit/s (192 KB/s)
> > > >>>     A Full Speed (1.1, 2.0) rate of 12 Mbit/s (1.5 MB/s)
> > > >>>     A Hi-Speed (2.0) rate of 480 Mbit/s (60 MB/s).
> > > >>> (no mention of USB1)
> > > >>>
> > > >>> Does a USB 1 port become a USB 1.1 though a driver update, or does
a
> > USB
> > > >>>
> > > > 1
> > > >
> > > >>> port have different electronics?
> > > >>>
> > > >>> I'm just trying to figure out whether the USB on an X20 and R30
will
> > do
> > > >>>
> > > > 12
> > > >
> > > >>> Mbit/s, or just 1.5 Mbit/s -- and I can't seem to find anything
that
> > > >>> documents it!
> > > >>>
> > > >>> Confused!  -Scott
> > > >>>
> > > >>>
> > > >>>
> > > >>>
> > > >>>
> > > >>>
> > > >>>> Weren't you just asking this about an X20 the other day?
> > > >>>>
> > > >>>> Also -- do you mean 1.1 vs. 2.0??  There aren't any speed diffs
> > between
> > > >>>> 1.0 & 1.1.  Just some fixes.
> > > >>>>  From http://en.wikipedia.org/wiki/Usb#Version_history :
> > > >>>> USB 1.0: 1996, 1.5 & 12 Mbit/s
> > > >>>> USB 1.1: 1998, 1.5 & 12 Mbit/s
> > > >>>> USB 2.0: 2000, 1.5, 12 & 480 Mbit/s
> > > >>>>
> > > >>>> -------- Original Message --------
> > > >>>> Subject: [Thinkpad] Anybody know? Is R30 USB 1 or 1.1?
> > > >>>> From: "Scott Matthews" <scott at turnstyle.com>
> > > >>>> To: thinkpad at stderr.org
> > > >>>> Date: 11/3/2007 8:25 AM
> > > >>>>
> > > >>>>
> > > >>>>> I can only seem to find things saying that R30 has USB, but not
> > > >>>>>
> > > > whether
> > > >
> > > >>> it's
> > > >>>
> > > >>>
> > > >>>>> USB 1 or 1.1
> > > >>>>>
> > > >>>>> Anybody happen to know?
> > > >>>>>
> > > >>>>> thanks,  -Scott
> > > >>>>>
> > > >>>>> _______________________________________________
> > > >>>>> Thinkpad mailing list
> > > >>>>> Thinkpad at stderr.org
> > > >>>>> http://stderr.org/cgi-bin/mailman/listinfo/thinkpad
> > > >>>>>
> > > >>>>>
> > > >>>>>
> > > >>>
> > > >>
> > > >
> > > >
> > >
> > >
> >
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> >
>
>
>
> -- 
> ________
>
> I believe everything happens for a reason.
> Usually, the reason is that sombody screwed up.
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