Toshiba Satellite M105 Notebook Logo
Suzanne Shelhart Posted on May 29, 2007
Answered by a Fixya Expert

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ISB Port One of my ISB Ports, on the back of the Laptop, stopped working. It isn't getting any electrical power. For example, I plug in my mouse and no light.

  • Suzanne Shelhart Jun 01, 2007

    Yes, it was one of my USB ports. I can see now where I can purchase a new card. I followed up you suggestion and went looking on the web. What really burns me is, I am still under warranty but I would have to take my laptop to a service location, 40 miles from my home and then leave it there for who knows how long. The service guy wouldn't even venture a guess on how long he would keep it. This is my last Toshiba. I should have know better as the Toshibas at work had the same problem with the ports.

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  • Expert 125 Answers
  • Posted on May 29, 2007
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You mean, USB. USB's have 5.0 volts power supply with current limit and protection. this means that up to certain extent, if you encounter a short circuit from the USB device, the port is well protected. However there will be instances when a defective USB device is plugged in the port will damage the port. There is most probably a small PCB mounted fuse that needs to be replaced. This will be difficult to find and should be sent to a qualified service center. On the other hand, you can buy a PCMCIA (cardbus) USB adaptor for less than $30 and you will have 2 or even 4 ports in your machine.

  • Anonymous Jun 01, 2007

    It's not only Toshiba. Try to remember what you have plugged in before the USB was damaged. Our company uses IBM thinkpads, some of the PC USB were damaged by Palm Tungsten. In my case, I destroyed my USB when I connected an infrared camera. The problem is not in the device but in the docking station or the cradle. Sometimes when you dock or undock in the wrong way, the USB can be damaged.

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