Computer Hardware
Which component must be vacuumed or replaced during preventative maintenance on a laser printer?

Toner cartridge
Ozone filter
All of the listed here
Scanning mirror

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Computer Hardware
When connecting a ribbon cable to a connector, how do you know which direction to plug it in?

It does not matter
The red line in the cable goes to the highest pin number
The blue or red line in the cable goes away from the power connector
The colored line in the cable goes to pin #1

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