Coolgear USB-8COMi-RM USB to Octal RS-232/422/485 adapter metal case w/DIN-Rail

Adds RS232, RS422, or RS485 Serial COM Ports to your system. DIP Switch control with 8 sets of 4-pin DIP switches to control mode settings. Utilizes a Built-in switching power supply of 100V-240V Full RS-232 modem control signals and hardware/software flow control. Automatic transmit and receive control for 2-wire RS-485 half-duplex mode