The SPDIF Cable is connected to the motherboard as shown below:
The SPDIF connection on the EVGA X58 4-Way SLI Classified Motherboard (E762) is circled in red below:
The SPDIF connection on the EVGA X58 3x SLI Classified Motherboard (E759/E760/E761) is circled in red below:
The SPDIF connection on the EVGA X58 3x SLI Motherboard (E758) is circled in red below:
The SPDIF connection on the EVGA X58 3x SLI LE Motherboard (E757) is circled in red below:
The SPDIF connection on the EVGA X58 SLI Micro Motherboard (E756) is circled in red below: