“Compatible with HP Laser jet P2055dn? Where are the 2.0 and 3.0 USB ports located and how can I tell the difference?”

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• It should be compatible, when you look at usb port, blue is 3.0 and black is 2.0

  Answered by shyboy 8 years ago

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• The 3.0 USB ports are on the left side of screen. The 2.0 are on the back.

  Answered by Amyazgirl 8 years ago

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