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Amazon | Lantronix Device Server UDS2100 Two Port Serial (RS232/ RS422/ RS485) to IP Ethernet - Device server - 2 ports - 10Mb LAN, 100Mb LAN, RS-232, RS-422, RS-485 [並行輸入品] | LANTRONIX
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Amazon.com: Lantronix PXN210002-01U PremierWave XN Device Server 4 Port 10Mb/100Mb LAN, RS-232, USB 2.0, 802.11 b/a/g/n : Electronics
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