Soldering an ethernet port to a PCB that already has the location for it?

Scougar

Scougar

Scougar

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I have a PCB that has the location for an ethernet port, but has not port on it. How difficult would it be to get one mounted, and how might I go about doing it?

EDIT: Looks like it may be a surface mount style :(

T88S5rM.jpg



I don't need to know about whether or not the system is setup to accept it, just getting it electrically mounted.
 
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Caged said:
You could hot air solder it on, but you need to know if you need a jack with the magnetics built in or not
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What are Jack magnetics? (OK, looked it up, but not sure the answer here based on the PCB)
 
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Silicon Si said:
This IC behind it is a '10/100Base-t Single Port SMD Magnetics' acording to its number
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In theory then you would just need a Port that hasn't got inbuilt magnetics


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Good link there, thank you!
"Discrete magnetics modules are often used in cost-sensitive applications as they can be less expensive than the integrated equivalent. They also help maximise the system’s protection from electrostatic discharge (ESD) as this design allows greater physical separation between the devices in the Ethernet front end.
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Now to try and find an appropriate jack for this. I'll happily take guidance!! (currently just scrolling parts on a chinese site for one that might fit)
 
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Scougar said:
That chip as you say is: https://www.alldatasheet.com/datasheet-pdf/pdf/532165/PULSE/H1102NL.html

H1102NL I don't know the brand however.

Does that chip indicate that I do NOT need jack magnetics as that chip takes care of it? (Which is bizarre they included that chip, but then not the port. Why would they do that if they were trying to save money?)
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Possible they bin sort failures - so may be the IC is not functional so the PCB sold in a model without ethernet rather than scrap the whole board. Sometimes it is the quickest way to respond to demand without losing sales.
 
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Rroff said:
Possible they bin sort failures - so may be the IC is not functional so the PCB sold in a model without ethernet.
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You know.. that kinda makes sense. This isn't likely to be a custom board in my opinion but reused from something else. We will see. Good idea to taper my expectations. Thanks Rroff, much appreciated.
 
Scougar said:
You know.. that kinda makes sense. This isn't likely to be a custom board in my opinion but reused from something else. We will see. Good idea to taper my expectations. Thanks Rroff, much appreciated.
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Edited my post as sometimes it is the quickest way to respond to demand without losing sales as well. So a bit of a lottery.
 
My printer won't be here for about a month, so will update when I get it, and let you guys know the hilarity of what I managed to screw up :D lol.
 
OK, for context, here is the board :
No0Shrr.jpg


Image is from 3DPrintBeginner's review of the FLSUN V400 btw.

On his version even the right hand side USB port is missing. So I am pretty darn sure these are just repurposed boards, especially since it has things like a headphone socket on there. Chipset is an Allwinner R818
 
Caged said:
What are you actually trying to do?
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Solder on an ethernet port to the right side of the board where there is a place for it and apparently the correct chips for handling it. The board runs on Ubuntu.. so it should be fine.
 
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