Introduction
This guide will teach you how to access the motherboard in order to replace the Ethernet ports.
Tools
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            Use a blue plastic opening tool to remove the top cover. 
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            Move the blue plastic opening tool gently underneath the top cover from side to side. 
 
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            Gently lift the motherboard and remove it from the case 
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            Put the motherboard over a (preferably white) surface. 
 
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            Locate the Ethernet ports 
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            Flip the motherboard and locate the 40 solder points corresponding to the Ethernet ports 
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            Melt the 40 solder points using a soldering gun. 
 
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To reassemble your device, follow these instructions in reverse order.
One comment
Can you make a guide to replace the antenna base connector, mine get broken at the base, I wonder if it is possible to make the cable connection directly to the antenna, does that could work?