Show a diagram of a super computer?

These are 2 diagrams from the x58 super computer manual

Diagram in - onboard headers and connectors section.

Pin 1 - +5v

Pin 2 - Empty gap

Pin 3 - Spdif out

Pin 4 - Ground

Diagram in - pin header easy instalation guide.

Pin 1 - +5v

Pin 2 - Spdif

Pin 3 - Empty slot

Pin 4 - Ground

These diagrams are confusing as it is not clear witch diagram is correct.

Witch two connectors are required for it th work.

I can only connect the spdif cable to two of these, with the cable ive got. Do i need a new cable to fit all three pins. or can i fit it to two of them to get it work.

If i need to connect it to two of them can you tell me what i need to do next to get the sound working properly.

Thanks War994.

SYSTEM: Vista 64 bit ultra.

CPU I7 920

CPU COOLER: THERMALRIGHT ULTRA 120 EXTREME + 120MM FAN.

PSU: THERMALTAKE 1500W

MOTHERBOARD: ASROCK X58 SUPERCOMPUTER

MEMORY: CORSAIR DOMINATOR 6GB DDR3 1600MHZ

SOLID STATE HARD DRIVE: OCZ CORE SERIES V2 60GB AS BOOT DRIVE.

HARD DRIVE: 300GB WD VELOCIERAPTOR.

GPU: NVIDIA 9800X2.

CD/DVD/BLURAY DRIVE.