Features: brand new and high quality It can support up to 5 SATA hard drives. It provides SATA port expansion, data for protection and a summary of performance in various applications. Support SATA 1.5 Gbit/s or SATA 3.0 Gbit/s transfer speed Support SATA hot plug. Output swing control and automatic impedance calibration for SATA II Phy Support for Windows 7, XP, Vista and other operating systems. Specifications: Product Name: SATA 1 to 5 Expansion Card Product Model: ADP5SAT-J01 Product Master: JMICRON JMB321 Product Interface: SATA 7PIN Support System: WINXP, WIN7, WIN8, WIN10, LINUX MAC- Wiring mode: Plug the small 4PIN power supply in , and plug the input SATA cable into the motherboard or expansion card. Package Includes: 1x SATA 1 to 5 Expansion Card 1x Sata Power Cord 1x Adapter Cable note: This expansion card must support the PM (SATA Port Multiplier) function on the motherboard or expansion card to recognize 5 hard disks. Normal motherboard SATA does not support this function. If it is not supported, only one card can be recognized. The small 4PIN power supply must be plugged in to use Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.