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title: Molex ONT
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In some sticks, such as those based on Lantiq chipsets, the serial interface is exposed in the upper pins of the ONT, in order to read them there are two possibilities:
- the use of an SFP molex ([farnell](https://it.farnell.com/en-IT/molex/74441-0001/connector-sfp-rcpt-20pos-smt/dp/2112385)) to which four wires are to be soldered and the other pins removed. This makes the adapter compatible with a single serial combination.
- the use of a board to which the SFP molex is soldered, exposing the main SFP pins.
{% include image.html file="ma5671a-root-1.jpg" alt="Example of how the SFP-TTL adapter is to be connected" caption="Example of how the SFP-TTL adapter is to be connected" %}
{% include image.html file="new-root-procedure/board-molex-arduino.jpg" alt="Example of how the SFP-TTL adapter is to be used with a custom board" caption="Example of how the SFP-TTL adapter is to be used with a custom board" %}
If you want to make your own board, here are some ideas:
{% include image.html file="board-dupont/top.svg" alt="Example of an SFP-TTL custom board" caption="Example of an SFP-TTL custom board" %}
{% include image.html file="board-dupont/bottom.svg" alt="Example of an SFP-TTL custom board" caption="Example of an SFP-TTL custom board" %}
the components to be soldered are instead:
- 1x MOLEX SFP (like Molex-744410001 [lcsc](https://www.lcsc.com/product-detail/Card-Edge-Connectors_MOLEX-744410001_C277615.html), [farnell](https://it.farnell.com/en-IT/molex/74441-0001/connector-sfp-rcpt-20pos-smt/dp/2112385))
- 2x pinout 2x10 (like [MINTRON MTP125-1210S1](https://www.lcsc.com/product-detail/Pin-Header-Female-Header_MINTRON-MTP125-1210S1_C358699.html))
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