Over a month late, but do the 650RM cables also work with the 850RM (Black Label)?
Exact model: https://www.amazon.com/gp/product/B07RCKG95L/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1
Is it the newer one by chance? https://www.amazon.com/dp/B07RCKG95L
Or is yours the older one with the yellow labeling?