Connecting a USB 2.0 device to a USB 1.1 port

M

moonlightpegasus

I have connected a USB 2.0 device (an iomega CD-RW/DVD-
ROM external drive) to my Toshiba laptop. Initially it
worked, then I began receiving the message that the
device could not be recognized. Now I am receiving the
message that I must "add a HI-SPEED USB host controller
to this computer." I don't understand what this means,
or how to do this. Thankyou to anyone who can help!
 
C

Cerridwen

moonlightpegasus said:
I have connected a USB 2.0 device (an iomega CD-RW/DVD-
ROM external drive) to my Toshiba laptop. Initially it
worked, then I began receiving the message that the
device could not be recognized. Now I am receiving the
message that I must "add a HI-SPEED USB host controller
to this computer." I don't understand what this means,
or how to do this. Thankyou to anyone who can help!

It means exactly what it says - you have a USB2 device connected to a
USB1(.1) port. You laptop is obviously too old to have USB2 ports and the
device is expecting to find itself attached to one as it wants data transfer
at USB2 speeds (480Mb/s IIRC). Not finding itself attached to one, it wants
to know why. There is absolutely nothing you can do about this, unless there
is a USB2 PCMCIA card you can buy (I've not owned a laptop for over a
decade, so I really wouldn't know). If there isn't, you will need to
purchase a USB1.1 device.

Always check compatibility before purchase.
 
Q

Quaoar

moonlightpegasus said:
I have connected a USB 2.0 device (an iomega CD-RW/DVD-
ROM external drive) to my Toshiba laptop. Initially it
worked, then I began receiving the message that the
device could not be recognized. Now I am receiving the
message that I must "add a HI-SPEED USB host controller
to this computer." I don't understand what this means,
or how to do this. Thankyou to anyone who can help!

USB2 is downward compatible with USB 1.1. AFIK, you do not *need* a
USB2 port to connect the USB2 device, but you do get the warning that
you are attempting to connect a USB2 device to a USB 1.1 port.

Here's what I would try. Connect the device and respond to whatever
warning is issued. Go to Device Manager (Control Panel | System |
Hardware Tab | Device Manager. From the View menu, select Show Hidden
Devices. Now, look for each occurence of the device in question and
Uninstall it. Expand the device categories, particulary the disk
drives, and USB. Shut down, and disconnect the device. Find the
installation CD and reinstall the device according to the *exact* vendor
instructions.

Q
 

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