From: Chris Schumann (cschumann_at_twp-llc.com)
Date: Mon Oct 09 2000 - 12:40:15 EDT
USB is not a PCI interface. It may be that the current USB chipsets
require PCI, but USB itself does not. I'm certain, for example, that
USB scanners do not have PCI busses in them to support the USB interface.
Most computers have them because the PCI chipset includes them for free.
So, someone could indeed design a serial- or parallel to USB device,
but it would be limited to the speed of the port, and the market is
probably pretty small.
I think we'll see a non-CardBus USB PCMCIA card soon, given that you
can buy 100Mbps ethernet cards, and those cannot sustain the full
data rate because they are limited to ISA bus speeds.
Chris
----- Original Message -----
From: <scosgt_at_att.net>
To: "Edward Mendelson" <emendelson_at_compuserve.com>
Cc: <thinkpad_at_cs.utk.edu>
Sent: Monday, October 09, 2000 10:20 AM
Subject: Re: [TP old models] Any way to get USB on old ThinkPads?
> USB is a PCI based interface, so if the older machine
> does not support CardBus or a PCI based docking
> solution, it probably can not be done.
> > John,
> >
> > As far as I can tell, there are plenty of USB-to-serial adapters that
plug
> > into a machine's USB port and provide a new serial port, but there
don't
> > seem to be any serial-to-USB adapters that plug into a machine's
serial port
> > and provide a new USB port. The same applies to parallel ports.
Apparently,
> > the technology simply doesn't allow it. I wish it did...
> >
> > Edward
> >
> > ----- Original Message -----
> > From: "John Small" <jtsmall_at_onramp.net>
> > To: "ThinkPad Mailing List" <thinkpad_at_cs.utk.edu>
> > Sent: Sunday, October 08, 2000 8:54 PM
> > Subject: Re: [TP old models] Any way to get USB on old ThinkPads?
> >
> >
> >
> > On Sat, 7 Oct 2000 12:34:36 -0400, "Edward Mendelson"
> > <emendelson_at_compuserve.com> wrote:
> >
> > >Many thanks for any info.
> >
> > I searched about a month ago and was pointed to serial port to USB
adapters.
> > It
> > was said they were faster than PC Card (pcmcia not CardBus) adapters.
I
> > have
> > not searched them out. If you do, pls post back your results.
> >
> > Thanks.
> >
> > -jts <Arlington, TX>
> > ThinkPad 560(EOC), 701C
> >
> >
>
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