![USB-485/4, 4-Port, USB, RS485/RS422 Serial Interface Device](https://d27wgn5g4t3wja.cloudfront.net/products/edc696ed-d835-426d-b01d-43c7b689c9ee/627134.png)
USB-485/4, 4-Port, USB, RS485/RS422 Serial Interface Device
778476-44 - NI (National Instruments)
The USB‑485/4 interface transforms your USB port into a single asynchronous serial port for communication with RS485 and RS422 devices. You can use a USB‑485/4 port as a standard serial port from your application, including RTS/CTS hardware handshake lines. NI serial interfaces also appear as standard COM ports for compatibility with programs that use serial communications.