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1. Turn off the power.
2. Orient the interface cable correctly and insert it into the interface connector.
Use a serial interface cable with the connection layout shown below.
3.2 Connecting Interface Cables
CAUTION
When disconnecting the cable, always hold the connector.
Be careful not to insert the USB interface cable into the cash drawer kick-out
connector.
To connect more than one printer to a single computer via a USB interface you must
change the serial number of the USB interface.
CAUTION
Place the interface cable so people do not trip on it.
Serial interface
USB interface
9-pin (female) - 9-pin (female) cable
PC Printer
Signal
Pin Pin
Signal
RXD 2 2 RXD
TXD 3 3 TXD
DTR 4 4 DTR
SG 5 5 SG
DSR 6 6 DSR
RTS 7 7 RTS
CTS 8 8 CTS