Hello there, I have a new Precision 5810 and I would like to upgrade the RAM

What I have found is this:

https://www.ebay.ca/itm/176641432884
or
https://www.ebay.ca/itm/375732179855?_skw=pc4-2133p+ddr4+ecc+reg&itmmeta=01JBJ3Q6T9D1YGS200Y6HQEFMH&hash=item577b62138f:g:bXMAAOSwBgRkW2kp&itmprp=enc%3AAQAJAAAA0HoV3kP08IDx%2BKZ9MfhVJKkocyZZUjhHyTmW%2FRme3obuLJ5BC9sM7ras93r1pYiM4iq8S66WMd7DFlIaLM2au6rjyIC80SGoYJXsgwILvh4uaBeBFWe%2FJvfafeuXL2I6oCMWH5fV4qztOtJxZ3FkFB6iuSORu4vMvRrG%2Bhr3jkI6KJL8z2wmwOyG8y1dbKQI%2FQAlc9hj7o4cb89ZZ04HyWoV9fV7NnReoqXvf9nVTfx5AfiCdLPxwIH%2BbRsTUp0F%2FTxdzc%2F9ShIrN%2BC970Ks1PQ%3D%7Ctkp%3ABk9SR6Tt3MPcZA

I would like someone to verify for me that either of these RAM modules work alright, as it seems it should.  It is 2133MHz DDR4 RDIMM PC4-17000 ECC RAM (288p)

Any input would be greatly appreciated, as it seems there's a lot of controversy for people and their results.  Just checking in with pro's and ppl with experience before I shelf out almost $100 CAD.   Thanks !