I'm very sorry to hear about your broken port. In answer to your questions:
1. The RealSense cameras require a USB 3.0 port. There is no way to make them function in a USB 2.0 port.
2. The RealSense cameras are very sensitive to the state of the USB port. I am very sure that even if you could solder the ports, there would be some problems with the camera's functionality.
A replacement under warranty is indeed your best and only option..
This message was posted on behalf of Intel Corporation
Thanks for contacting us!
We’re sorry to hear that, and as MartyG has mentioned, the RealSense R200 camera requires a USB3.0 and soldering the port could be problematic for the camera’s functionality. So, we highly recommend you to contact click.intel.com (Click Support) in order to ask for the replacement.
Hope this information helps, also, if you have any other questions, please let us know.