Hello,
Have you ever solved the problem?
I've got the same SYS-620U-TNR with sata cabling
1xCBL-SAST-1241F-100 Slimline x4 (STR) to Slimline x4 (STR),FFC,INT,41CM,100
2xCBL-SAST-1250F-100 Slimline x4 (STR) to Slimline x4 (STR),FFC,INT,50CM,100
and can't find the NVMe kit literally anywhere -...