Shentek 11004 USB to 4 port RS232 Adapter Industrial FTDI Serial Converter High Speed 921.6kbps transfer rate Din Rail Wall Mount Kit design https://youtu.be/c8YIAmqQtXc shentek releases USB to 4 port RS-232 Adapter Industrial Serial Converter The product supports 15KV ESD protection for all Serial ports, it is great way to protect your USB Host port. [...]
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