If you have a server board that requires a 2 8-pin EPS connector, you don't have to buy a new expensive power supply with 2 8-pin EPS power connector. You can just use this adapter cable to make your existing standard 1 8-pin EPS connector work as 2 8-pin EPS connector if your power supply is 500w or more.
Cable length is 12"
This is used to convert 8-pin EPS Xeon or Opteron connector into 2 8-pin EPS connectors, normally PS is at least 500W to qualify for the conversion.
Normally this is needed for MB needing two 8-pin EPS connector