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USB-to-serial converters
1-port RS-232/422/485 USB-to-serial converter
Universal I/O
Universal I/O, 4 AIs, 4 DIs, 4 DIOs,
Serial device servers
1-port RS-232/422/485 serial device servers
Ethernet Modbus gateways
1 standard serial-to-Ethernet Modbus gateways
Unmanaged Ethernet switches
8-port compact unmanaged Ethernet switches