A power cable connector compatible with Serial Advanced Technology Attachment (SATA) and Integrated Device Electronics (IDE) standards has a SATA connector module and an IDE connector module. The SATA connector module has a SATA connector plug and multiple SATA power terminals. The IDE connector module has an IDE connector plug and multiple IDE power terminals. The IDE connector plug has a chamber having a detour guide. The SATA connector plug is detachably mounted in the chamber. The IDE power terminals are mounted in the IDE connector plug, detachably and respectively contact the SATA power terminals. Each IDE power terminal has a connecting element. One of the connecting elements of the IDE power terminals is mounted along the detour guide to prevent short circuit and facilitate manufacture. Therefore, the SATA power terminals are not separated by a separate insulator for improved production yield and performance.