This unit is a MOXA NPort 5110 serial device server with one port. Note that it doesn't come with a power supply.

Using this MOXA NPort 5110 device server is easy. First, connect your serial device to the single port. Then, connect it to your network. Remember, you need to use your own power supply as it's not included. Keep it in a dry and cool place to avoid overheating. If you encounter any issues, check the connections first. Regularly clean the device to keep it working well.