Sunix DPKS04H00 utp 4xserial

Sunix DPKS04H00 DevicePort dock mode ethernet enabled - 4x serial/RS-232 over ethernet ( 2xRJ45 ) , upstream+downstream with daisy chain support upto 4x units / 12x serial ports , auto-detect & port-mapping , 115 Kbps , sunix DPL2000Q chipset , 190x119.6x27mm , 15KV ESD protection + 8KV IEC1000-4-2 Contact Discharge + 4KV line-to-line protection , powered by USB - to prevent on-line spy recording, DevicePort? Dock Mode limits specific ethernet port connection to PC ( not directly on router or switch )