

The ones on Amazon are intended to run GPUs for crypto farms, but they’re all brands you’ve never heard of with dubious claims and they’ve all got at least one review where either the device was defective or something was installed incorrectly and it caused damages.
There is no year 1 in our current calendar system either. The Gregorian Calendar begins in 1582. The Julian Calendar includes year 1, but changed in year 8, so 0001-01-01 is a slightly different day in the Gregorian Calendar, the Julian Calendar, and the old Julian Calendar. 2000 years after Julian Calendar 0001-01-01 is late December 2000.
This has less meaning in China because China used its own calendar until 1911. People living in China 2000 years before 2001-01-01 would not have called it year 1.