Used Rm1000x, still in good condition, and was being used in my main rig up until I switched PSUs to prepare for the 5000 series. Included a picture of the PSU being used in my main rig as well.

I have been using it for 2 years so that's a negative. But I am including the 12VHPWR I bought from Corsair. Also, can be seen being used in my main rig. I also don't have the original box, But I can assure safe packaging. Will also leave a link to more info on the PSU from Corsair.

https://www.corsair.com/us/en/p/psu/cp-9020201-na/rmx-series-rm1000x-1000-watt-80-plus-gold-fully-modular-atx-psu-cp-9020201-na