My model, and I believe all other, have a 4pin molex connector for the power and as many sata ports as the case can handle (in my case 4). My “mobile rack” came with 4 rather long sata cables (about 30cm) so it was easy to fit them through an empty pcie bracket slot and I just had to buy a somewhat long 4pin molex adapter.

The drives are practically internal, they are just located outside of the case in said “mobile rack”.