Two additional SATA ports

Possessor of a slim PC equipped only 2 S-ATA II ports (300 MB / s), I wanted to add an SSD SATA III (600MB / s) through this card to my 1TB HDD my CD player.
No luck, I am one of those who can make the most of this card and are limited to the SATA I (150MB / s), so I have connected my CD player on and on my SSD motherboard.
Please check that the PCI standard used by your computer allows to exploit the potential of this card before you buy it!
But otherwise, it works, I can boot from a CD as before, the boot sequence is somewhat lengthened (4-5 seconds) by initializing the card.