With the SY-HUB15054 USB 2.0 to 4 port serial adapter, you are able to connect a single USB port to control and monitor four RS232 serial ports. This can then be used on applications such as POS printer terminal, networking systems, PLC instrumentation device, data acquisition, and I/O control modules.

• USB signals: vcc, data+, data-, GND
• RS-422 signals: T/R+,T/R-, RXD+, RXD-, GND
• RS-485 signals: T/R+, T/R-, GND
• Automatic detection of the transmission rate of the Serial interface signal
• Supports bus powered, self powered and high power bus powered USB configurations

USB signals: vcc, data+, data-, GNDSyba