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Moxa ABC-02-USB-T USB based Auto Backup Configurator,
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Moxa UPort 1110: 1 Port USB-to-Serial Adaptor, RS-232
Moxa UPort 1130 Serial Converter
Moxa ethernet switch EDS-512E-4GSFP-T 8 eth / 4 fiber DIN-rail new 1-y warranty | eBay
Amazon.com: MOXA TCF-142-M-SC-T - RS-232/422/485 to Multi-Mode Optical Fiber Media Converter with Fiber Ring Support and SC Connector, -40 to 75C Operating Temperature : Electronics
Moxa ICF-1180I-S-ST Serial Converter | M/A Rugged
Moxa Serial to Fiber Media Converter Part Number TCF-90-M-ST