Thank you and most interesting. Does anyone know if:
Does that limitation apply if you have a PC with 2 USB 1.1 ports, running one with just low speed (1.5M) devices and the other only with high speed devices (12M), would the low speed devices slow the second port????
(Maybe that is why Desktops come with 2 ports????)
Could not be a problem if so....
David Hingston MB ChB MBA
_________________________________________________________________________
http://hingston.yi.org/ hinkie@paradise.net.nz
http://pcmc.yi.org/
  ----- Original Message -----
  From: Adam Warner
  To: ADSL Mailing List
  Sent: Thursday, December 21, 2000 2:48 AM
  Subject: RE: Dynalink USB ADSL

  Hi Mx,

  Going solely by the USB specifications a USB ADSL modem would be an unwise purchase.

  If you do some research into USB characteristics you will understand why:

  http://www.mackido.com/Hardware/USB2.html

  The above link discusses USB as well as USB 2.0. Also realise that USB 1.x devices (keyboard, mouse, USB modem, etc.) will destroy the performance of future USB 2.0 devices. I'd hate to imagine the latency problems as well. Do you really want your latency to increase b/c you also have a USB mouse? "When the low speed mode's data (packet) is being sent, then you can't be sending the high speed data (packets)." Bad for gaming I'd imagine.

  I'd connect an ADSL modem to nothing less than a dedicated 10Mb connection.

  I have a Microsoft optical mouse. When plugging it into a USB port I get uneven response when accessing my hard disk (even at a higher refresh rate). I get smooth movements by connecting it to a PS/2 port (which has a dedicated interrupt). Now imagine if that mouse was a high bandwidth device where low latency was crucial!

  Regards,

  Adam

  -----Original Message-----
  From: owner-adsl@unixathome.org [mailto:owner-adsl@unixathome.org]On Behalf Of MX
  Sent: Wednesday, 20 December 2000 6:01 p.m.
  To: ADSL Mailing List
  Subject: Dynalink USB ADSL

  Has anyone tried or purchased a Dynalink USB ADSL Modem.

  How do they perform?

  Any problems with gaming on them? any lag etc?

  I am considering purchasing one.

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Received on Thu Dec 21 10:19:22 2000