The Cables To Go 27314 ATX12V Adapter Cable is a 12" ATX to Pentium 4 Power Adapter. This power adapter cable is designed to connect a standard 4-pin Molex (LP4) power connector to the special onboard 4-pin P4 power connector. Converts a standard molex to ATX12V P4 power connector. C2G / Cables to Go - 27314 - 12in ATX Power to Pentium 4 Power Adapter. C2G 27314 1 ft.