IBM X3200 M2 HDD Connections

Hello, so I recently purchased an IBM System X3200 M2 and I'm having trouble connecting the hdd.
It is the hot swap SAS/SATA model and it has this backplate that the hdd connects to, then that backplate has a power connector, and a cable from the psu connects there and then there's the data cable, that also connects to the backplate but then I don't know where to plug it in the mainboard. I'm reading the manual and it says the SAS/SATA controller, but I can't find it anywhere.
Any clues?

Thanks!

I'm afraid that since these fora belong to PC Specialist who sell custom-built PCs and laptops we're not able to offer advice on other builds. You might try a more general forum such as Tom's Hardware.

Sure, thanks. I was kinda desperate so I searched for PC forums, didn't realized what you've just told me. Feel free to take the thread down