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If you do not install the CardScan software first, Windows will not recognize the scanner. 2. Connect the AC adapter to the scanner. Plug the AC adapter into a power outlet. The light on the scanner blinks three times, then stays on. Scanner Light ------ On: Scanner is ready Off: Scanning a card or power not connected Blinks 3 Times: During self-test Blinks Continuously: Technical problem AC adapter connection 3. Connect either the scanner’s parallel port OR the scanner’s USB port to the PC