4Pin dual interface to 6pin line, some old-fashioned power supply does not have 6pin graphics card power cord, you can use this double D-type to 6pin line transfer, and then connect to the graphics card, you can apply to 6pin graphics card, to give your graphics card stability powered by. Features: 1. Professional power supply cable for PCI-E HDD of computer, widely compatible for Windows, LINUX, MAC systems. 2. High speed data transmission, stable performance. 3. 6Pin to 4Pin interface ensure good contacts and suitability. 4. High quality flexible cable, efficiently avoid from interference, safe and durable to use. 5. Compact and lightweight, easy to install, convenient to use and carry. 6. Compatible with 3.5"/2.5" SATA hard drives, ESATA to SATA hard drive. Specification: Model: BK3400 Interface type: 4pin SATA male / 6pin Material: Plastic Length: about 18cm/7.09in Support system: For WINDOWS/LINUX/MAC Package List: 5 * Power Cable 1、Professional power supply cable for PCI-E HDD of computer, widely compatible for Windows, LINUX, MAC systems. 2、High speed data transmission, stable performance. 3、6Pin to 4Pin interface ensure good contacts and suitability. 4、High quality flexible cable, efficiently avoid from interference, safe and durable to use. 5、Compatible with 3.5 inch/2.5 inch SATA hard drives, ESATA to SATA hard drive.