Computer Hardware
The mouse pointer moves erratically, what is the possible cause? The mouse

None of these
driver is not installed properly
is not connected
ball is dirty
has an incorrect IRQ setting

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Computer Hardware
To install a second IDE drive into a computer, you must

Verify that you attach the drive to the connector at the end of the ribbon cable
Set the master-slave jumper to slave on the second drive
Verify that you define the new drive as D: in the CMOS setup
Use the IDE configuration software to set the new drive as slave

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