VCOM 12-Inch VC-POW4EXT 4-Pin to 4-Pin Power Adapter Cable (CE309) 4 pin socket to 4 pin plug Extension Cable. 12 inches A must for any Pentium system motherboard upgrade Easily upgrade your ATX power supply to a P4 Connector can use AMP MOLEX JST KET and so on Build a high performance P4 system without having to buy a new power supply! This adapter cable allows you to easily convert from a standard 4 pin Molex power connector to a 4 pin P4 motherboard power connector