4 in 1 extension/conversion. ATX-12V 4pin/EPS-12V 8pin extension; ATX-EPS/EPS-ATX conversion. Length: 8". This cable by Athena Power is convert or extend your power supply's P4 ATX or EPS cable or convert from one to the other. With 2 sets of 4 pin connectors, this cable gives you a 4 in 1 solution for creating an EPS 8-pin Extension, a P4 ATX 4-pin Extension, an EPS 8-pin to P4-12V 4-pin Conversion, or an EPS 8-pin to P4 ATX 4-pin Conversion. Practical and easy to use, this cable is the extension/conversion solution for all your EPS12V or ATX12V needs. Athena Computer Power CABLE-M84M84F 8 in.