This board comes with a wifi card where the same board without the "ac" designation does not. Makes since if you consider the A/C bands. This board seemed the better deal since I didn't have to shop for a wifi card. Both boards permit a SSD and 4 SATA HDD. The other board has 6 SATA ports, but using a SSD with that one disables the 5/6 ports. Both boards appear to only use 4 SATA ports with the SSD. Both boards have a HDMI port, but require a CPU with graphics to use it or you'll need a separate graphics card. Make sure you get the right CPU.