4-Port RS-232 to USB Converter Full compliance with USB V1.1 and V2.0 specifications. RS-232 port supported. Transmission speed up to 921.6 kbps. Bus-powered; no need for external power supply. Plug & Play installation. No additional IRQs or I/O ports required. Hot swap function support.
4-Port RS-232/422/485 to USB Converter Full compliance with USB V1.1 and V2.0 specifications. RS-232/422/485 port supported. Transmission speed up to 921.6 kbps. Automatic RS-485 data flow control. Bus-powered; no need for external power supply. Plug & Play installation. No additional IRQs or I/O ports required. Hot swap function supported.
