Actually, it's controller and MB controller are of SCSI family. To the controller it doesn't really mean much if it's SSD, HDD or ODD, it's just another storage device. It's BIOS and P&P firmware should tell your OS how to use it.
Important part is to make sure that W7 recognizes it right as an SSD and enables trim command.
You can open the Admin Command prompt and type:
fsutil behavior query DisableDeleteNotify
DisableDeleteNotify = 0 : TRIM is already enabled and working in Windows
DisableDeleteNotify = 1 : TRIM is not enabled
To enable SSD TRIM support in Windows
fsutil behavior set DisableDeleteNotify 0
In disk properties, under Tools > Optimization > it should show as SSD.
Just another question, did you set SATA port in AHCI mode ? It's important for SSD, it's performance and life.