USB Problem
Cunning Artificer
Thread Starter
Join Date: Jun 2001
Location: The spiritual home of DeHavilland
Age: 76
Posts: 3,127
Likes: 0
Received 0 Likes
on
0 Posts
USB Problem
Nothing on FAQs, so I'll ask...
IBM Thinkpad R40, Win XP Pro O/S, 1Gig of memory and with two USB2.0 ports.
Plugged my external hard drive into the usual USB port and got a message telling me I'd plugged a Hi-Speed device into a low speed port. Same again if I plug in the DVD burner. Same if I use the other USB port. The cordless key board and cordless game control both work fine on both ports. So do the Sony 4 Gig memory stick and my Nikon camera.
Everything worked perfectly previously and device manager tells me all the USBs are working properly. Tried uninstalling the external drives to re-install them, but as soon as I plug them in I get the same message - hi-speed device plugged into a lo-speed port. The microsoft trouble shooter is as useless as usual - asks you to do a load of simple things and then says it can't work out the problem.
Any ideas what to try next?
IBM Thinkpad R40, Win XP Pro O/S, 1Gig of memory and with two USB2.0 ports.
Plugged my external hard drive into the usual USB port and got a message telling me I'd plugged a Hi-Speed device into a low speed port. Same again if I plug in the DVD burner. Same if I use the other USB port. The cordless key board and cordless game control both work fine on both ports. So do the Sony 4 Gig memory stick and my Nikon camera.
Everything worked perfectly previously and device manager tells me all the USBs are working properly. Tried uninstalling the external drives to re-install them, but as soon as I plug them in I get the same message - hi-speed device plugged into a lo-speed port. The microsoft trouble shooter is as useless as usual - asks you to do a load of simple things and then says it can't work out the problem.
Any ideas what to try next?
Plastic PPRuNer
Look in the BIOS settings, maybe there's a setting for hi vs. lo speed for the USB ports.
Occasionally the BIOS settings flip for no obvious reason (cosmic rays anyone?). Or this can happen when the mobo battery starts fading.
Occasionally the BIOS settings flip for no obvious reason (cosmic rays anyone?). Or this can happen when the mobo battery starts fading.
Join Date: Feb 2000
Location: asia
Posts: 542
Likes: 0
Received 0 Likes
on
0 Posts
How old is the laptop?
Does it support USB 1 or USB 2\ via a Bios setting? if so it might be set to 1 only.
USB 1 is the lo speed version, 2 the high speed version. The devices you mention that work OK will operate on either version 1 or version 2 ports, but the DVD/external disc need version 2
USB 1 is the lo speed version, 2 the high speed version. The devices you mention that work OK will operate on either version 1 or version 2 ports, but the DVD/external disc need version 2
Been there, done that, got several Tee shirts!!
Redmond's finest software seems to be unable to cope adequately with the complexities of USB2. My machine constantly does this and, so far I haven't found any commonality in the conditions that provoke it. Sorry, can't offer solutions - just sympathy and a suggestion that something - anything - would be an improvement on
XP!!
Redmond's finest software seems to be unable to cope adequately with the complexities of USB2. My machine constantly does this and, so far I haven't found any commonality in the conditions that provoke it. Sorry, can't offer solutions - just sympathy and a suggestion that something - anything - would be an improvement on
XP!!
Official PPRuNe Chaplain
Join Date: Apr 2001
Location: Witnesham, Suffolk
Age: 80
Posts: 3,498
Likes: 0
Received 0 Likes
on
0 Posts
My Thinkpad does it from time to time. I just ignore it. Not a problem with the devices I plug into it.
Remove the device in control panel, and then unplug and reconnect. If that still gives you the same error, take a look at the USB port etc settings.
Remove the device in control panel, and then unplug and reconnect. If that still gives you the same error, take a look at the USB port etc settings.
