Autonics
SCM-USP
Serial Communication Converter, USB-Serial, 1.5m (Not Extended), Non-Isolation, USB: USB 2.0 A type (male) 4-pin Connector for Communication, 1,200 to 115,200bps (recommended: 9,600bps), Half Duplex Type
USB to Serial Communication Converter (SCM-38I/SCM-US48I) Built-in Protection Circuit