Pantum PT-L280 Series - Printer Ports Overview; USB and Serial Port Details

PT-L280&PT-L380 Series User Manual
Chapter 4 Ports
4.1 USB
Pin No. Signal name
1 VBUS
2 D-
3 D+
4 GND
4.2 Serial port
Pin No. Signal name
1 -
2 TXD
3 RXD
4 -
5 GND
6 DTR
7 -
8 RTS
9 -
20