Usb ports not work simultaneously,only one at a time, using first port and attach usb at the other port,it will disconnect the first attach port.  i already upgrade my power supply from 350 watts to 500 watts  but still encountering the same problem. i'm using O.S. XP SP2. pls send me solution. thanks

Try a self-powered USB hub. They're under $20 usually, don't drag down your power supply and give you extra ports to use.

Also open Device Manager, Universal Serial Bus Controllers, each USB Root Hub, and under the Properties, Power Management tab of each one, disable the option to "Allow the computer to turn off this device to save power".

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not a bios problem but a usb port driver problem

Since you've not mentioned exact configuration I'd suggest to check BIOS settings and return them to normal.

Hi,

Try updating BIOS and check and also try the reinstalling the USB roots hubs again

Friend,

There shouldn't be any need for a parallel-to-USB device, since your printer has both ports - and you could use ONE of the ports for printing. One, since two ports does NOT mean that the printer can serve two PCs simultaneously. On startup, it determines which port is active and "forgets" the other.

So I would have gone for either a parallel cable (IEEE 1284 standard, no longer than 10 feet) or a USB cable, running the cable directly from PC to printer.

If there's a need for several users to access this printer, I would either have shared it from my computer (where it's physically attached) to the other users in the network - or, purchased a jetDirect network card for the printer. With a JetDirect card the printer is accessible for all users over the network regardless of which computer is switched on.

Hope this clarifies and gives an answer to your question.

//Al

This is most likely a problem with the USB port you are plugging it into or a problem with memory - you could just be running too many programs simultaneously which causes everything to lag.

If it is a problem with your USB, try all other USB ports on your computer. If none of your USB ports are working and you have determined that it is not because of other problems like memory, you can get external USB expansion ports, which would plug into other ports on your computer.

To check if you are using too many programs, press ctrl, alt, and delete simultaneously to bring up the task manager. Click on the the Performance tab which will show you the usage of your computer's resources. If CPU usage or Physical Memory are near maximum capacity, you should click the Processes tab to see what programs are running and see if there is anything you do not need which can be shut down.

Another good tip to reduce memory usage is to download the free program Spybot Search & Destroy, which finds and removes harmful spyware, which can endanger your privacy as well as slow down your computer.

this is the fault of your usb port, its a hardware problem, its better not to use that port, use a usb hub if you want more usb ports

Does your router suports usb ports, normally routers do not support usb ports, please check if your router first suports usb ports

There are few things to remember using USB.

• If your System is in hybernation mode, don't remove any attached USB device, because it will damage your USB driver. This is one of the known problem from microsoft.
• If you have to remove any USB device use 'Safely Remove Hardware'.

To remove currepted USB drivers its not enough to remove your printer drivers.

1. You should un-install the 'Universal Serial Bus Controllers' from Device Manager.
2. Then re-boot to clean registry.
3. Install the 'Universal Serial Bus Controllers' using XP Setup CD.
4. Then check the Mass storage, PDA etc, it should recognized by XP.
5. Then install printer driver (don't attach printer to system untill setup finish or setup says to connect).

I think it will fix.
Please let me know your feed-back.

Thanks
Iqbal

What port are you using? May be you are using usb1.0 port. Use USB 2.0 port. Sometimes Changing USB cable would do the trick! Try SCSI if you have a card and SCSI cable, but this adds to the cost. All new comps come with USB 2.0. I had similar problem with 9080C and on changing to USB 2.0, it worked fine. Don't use USB & SCSI simultaneously.

S. Mohan, India