Re: USB 2.0 crawling / mystification under XP SP2

On Mar 31, 11:35 pm, Andrew E. <eckric...@xxxxxxx> wrote:
  Try device mgr,uninstall the USB controllers w/o restarting each time,once
 thru,if youre hardware is intel based,download & install the chipset
installation
 utility for the board,this has the USB drivers.



"Derik" wrote:
     Howdy!

     I'm helping my dad set up his new digital camera.  The OLD camera
used SD cards- which were easy.  Put 'em in and open 'em up.  The new
one uses USB cables, and it's finally forcing me to deal with a
problem he's had for a while.

    His laptop's USB is slow.  SLOOOOW.  USB 1.1 slow.  A 4GB Compact
Flash card takes ~20 minutes to transfer.  (It took 2 minutes on my
laptop.)

     Here's the thing-- I think he HAS USB 2.0.  He's got a "Standard
Enhanced PCI to USB Host Controller", 'Enhanced' == 2.0, right?

     Google has a lot of noise circa USB2's rollout about drivers and
suchwhat- a lot of it boils down to "Get SP1!"  ...but he has SP2.

Computer is a Toshiba Satellite laptop, circa 2003.  (No, he didn't
consult me on the purchase.)

It has 3 USB ports in the back.  The Device Manager identifies each of
these ports as a 'USB Root Hub' with an associated controller.  2 are
standard USB 1.0 controllers, 1 is the enhanced 2.0 controller.

     Each controller APPEARS (operative term) to be associated with a
specific hub, and thus with a specific port (each Hub shows the
hardware plugged into it under their respective 'power' tab in the
Hub's property dialog.)
     http://members.aol.com/regenesis0/xp_usb_port_devices.jpg

     The Hub's have a Device Instance ID of 'USB\ROOT_HUB\#######'
     The Hub with the Enhanced controller has a Device Instance ID of
'USB\ROOT_HUB20\####### (Uh, #'s are stand-ins, obviously.  They're
different for each one if that matters.)

     HERE's what baffles me- when I disable the 2 'NEC PCI to USB Host
Controller', their associated USB Root Hub's (naturally) disappear.
(I cannot disable the Enhanced controller.)  This leaves me with only
1 USB root hub, whose Device ID says it's 2.0, and driver says its
enhanced.  ....but it doesn't leave me with 1 USB port.  All 3 still
work.  And now when I plug things into them, they all come up under
the 'power' tab of my 1 remaining USB Root Hub, regardless which port
they're connected to.

     JESUSALLAHBUDDHA WHY?

     (Also, it still runs at 1.1 speeds.)

     ...help?

     -Derik- Hide quoted text -

- Show quoted text -

Need to also check in the PC's BIOS so as to se that the USB 2.0
"mode" is turned on. I have seen BIOSes where the BIOS can control
which level of USB is active.
.

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