If they've listed it as genuine nintendo already, it's likely they either think it is, or expect anyone buying to either not know the difference or care enough to complain. You might not get any more helpful information.
OS: Windows 10 64 bit Professional
CPU: AMD Ryzen 5900X
RAM: 16GB
GPU: Radeon Vega 56
CPU: AMD Ryzen 5900X
RAM: 16GB
GPU: Radeon Vega 56
