Hi, Gigabyte once decided to add SLI support to all X58 boards after all ...except the EX58-DS4 which was already EOL. =( I found out about this, after I bought myself a second GTX660 Ti. I read this SLI support is in fact only a certain string in the BIOS, just like all SLIC mods are done here. So now I am hoping that someone can help me doing this mod. Manufacturer: GIGABYTE Motherboard Model: GA-EX58-DS4 BIOS revision: F11 BIOS type: Award Bios Download Link: www[DOT]gigabyte.com/products/product-page.aspx?pid=2959#bios I have added an export from the ACPI table from my current BIOS version F6, which has an SLIC mod, but I dont know if its relevant!