| PC serial port | DSUB pin | Jack pin | Barcode reader pin |
| GND | 5 | R | GND |
| PC TX | 3 | GROUND | Barcode reader RX |
| PC RX | 2 | L | Barcode reader TX |
| PC serial port | DSUB pin | Jack pin | Barcode reader pin |
| GND | 5 | R | GND |
| PC TX | 3 | GROUND | Barcode reader RX |
| PC RX | 2 | L | Barcode reader TX |
