does my motherboard support ahci mode so i can instal SSD ?

[Yusuf Il]

my motherboard is
Motherboard Name Gigabyte GA-B75M-D3H (2 PCI, 2 PCI-E x16, 4 DDR3 DIMM, Audio, Video, Gigabit LAN)

 

[octavecode]

Of course it does just make sure to connect the SSD on the SATA3 port.(bottom white)
Your board has 1 SATA3 port and 5 SATA2 ports.
You also need to change IDE more to AHCI before and if you install windows on that ssd,you can do that by entering the UEFI menu under Peripherals>Sata mode selection>AHCI