... English shows"PRICE","TOTAL","CASH","CHANGE"; 3.RS232 serial port or USB Port. 1x8 Customer 2 ... digit led display support RS232 serial port or USB Port. Configuration: 1. Hardware ... configuration 1. Interface: Serial port or USB 2. Baud rate: 2400 bit ... Command sets: ESC/POS. Send data to the serial interface for display, according to the system command ...