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Theres a guide on a surface pro 3, but i have a surface 3. I need this asap if anyone could maybe link me to the part? the charging port is completely broken and needs replaced.

Just buy a docking station for your surface. I just bought mine for under $20. It does not use the charging port to charge the surface and charges it a lot faster than the charging port anyway.

This ifixit link might be helpful to you Follow the link How to replace a charging port?