Proper way to hook up 3 SATA drives?

[fivetiger]

I have a SATA HDD and two SATA optical drives. No RAID.

My Corsair 620HX comes with:
2 cables with 3 SATA connectors each.
1 cable with 2 SATA connectors.

Is there a correct way I should set them up? Do they each get their own cable (meaning there are unused connections on each line)? Or all 3 connected to one? HDD and optical on different cables?

...and if different cables, should they go on different rails? I get the impression that it doesn't matter.

Unfortunatly, the manual has every language except Noobish.

 

[moonsite]

It is just power, so it doesn't really matter. If it was me, I'll plug them in in a away that make them look neat in the case. 1 cable w/2 connector for 1 hd and 1 dvd. Use 1 w/ 3 connectors for the other dvd and leave the other one wrapped up.