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| | 4 Port USB-to-Serial Hub,RS-232/ | | 联系我们 | PCB Symbol, Footprint & 3D Model | 4 | UPort 1400 | USB to Serial | RS-232, RS-422/485 |
| | 4 Port USB-to-Serial Hub, RS-232 | | 联系我们 | PCB Symbol, Footprint & 3D Model | 4 | UPort 1400 | USB to Serial | RS-232 |
| | 4 PORT USB-TO-SERIAL HUB, RS-232 | | 联系我们 | PCB Symbol, Footprint & 3D Model | 4 | UPort 1400 | Serial to USB | RS-232/422/485 |