If there are four SATA 150 headers then Gigabyte includes a cable for each.
Updating gigabyte bios ga k8n pro
Gigabyte is depending on consumers to realize that purchasing an additional PCI component for audio, USB or 1394 ports isn’t necessary.
This is one reason why only two PCI slots are on the GA-K8N Ultra-SLI.
The second is that four of the PCI slots had to move to give room for the SLI PCIE slots.
Heatsinks grow and shrink in size like the changing of the seasons.
It would appear that this empty area of the PCB may be archeological evidence of what was.