USRIOT Serial UART TTL to Ethernet converter box
thingiverse
Little box with a friction fit cap for USRIOT Serial TTL UART to Ethernet converter. https://www.newegg.com/Product/Product.aspx?Item=9SIA2RP45U5389 I recommend newegg, because the shipping was so much better than other Chinese shippers. I have printed them in both PLA and ABS with support, I just grab the support with needle nose pliers, or twist and crack it with a flat head screw driver and I've had really good luck getting it out.
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