... ","CASH","CHANGE"; 3.RS232 serial port or USB Port. 1x8 Customer 2 digit led display support RS232 serial port or USB ... DOS or Windows mode. 3. No handshaking signal. Application: LED8E customer display is used in windows charge of Marketplace, Hospital,Airdrome ... , Station, Post, Bank etc. 1x8 Customer 2 digit led display support RS232 serial port or USB ...