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Externally Powered
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This section includes cash drawers that can be connected directly to a POS computer system via the computer's serial interface, where the cash drawer requires to be externally powered.
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PC Powered
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This section includes cash drawers that can be connected directly to a POS computer system via the computer's serial interface, where the cash drawer is able to be powered by the computer's RS232-DB9 serial port. These cash drawers may be supplied with an RS232 serial port that will need to be inserted in an available slot in your PC, so, if you are unsure, purchase an externally powered serial interface cash drawer.
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