SATA ports can have 3 settings (modes): IDE, AHCI, & RAID.
When using Intel SRT the port your HDD is connected to has to be in RAID mode.
Some motherboards allow you to set SATA modes for each individual port; yours does not but it’s no big deal.
Any drive connected to those ports that are not part of an actual RAID array will automatically default to AHCI mode.
So you will be able to connect any SSD, HDD, or ODD to the remaining 4 ports without any issues.
1.) Connect your HDD to one of the SATA 3Gb/s ports.
2.) Install Windows and the latest Intel SRT drivers.
3.) Shut down your pc and connect your SSD to one of the SATA 6Gb/s ports.
4.) After you’ve successfully set up SRT you can shut down and connect any remaining drives.
I’m assuming you have the 2.5" version of the 24GB Intel 313. If you have the mSATA version it is not compatible with your motherboard. mSATA SSDs have to be connected to mSATA ports.