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MCDST Desktop Technician Exam Prep

Category - MCDST

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You are assisting a user who has issues connecting his USB hard drive to his laptop computer. The USB hard drive is accessible when he connects it to his desktop, but will not work when connected to the laptop. Which of the following should you do to ensure that the USB hard disk can function properly when connected to the USB hub on the user’s portable computer?
  1. Ask him to use a different cable to connect the USB hard drive to the laptop.
  2. Assign a different IRQ to the USB hub in the device manager.
  3. Ask him to replace the laptop motherboard; it is faulty.
  4. Ask him to replace the portable computer’s bus-powered USB hub with a self-powered USB hub.
Explanation
Answer - D - You should ask him to replace the portable computer’s bus-powered USB hub with a self-powered USB hub.

Key Takeaway: You should ask him to replace the portable computer’s bus-powered USB hub with a self-powered USB hub. In this case, the USB hub is not able to supply enough power to the hard drive. So you have to provide a self-powered USB hub or a power supply for the external hard disk to fix this problem.
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