Features: brand new and high quality Enlarged heat sink provides better heat dissipation effect. The rear 4-port design fits the size of the chassis and is universal for large and small chassis. The tail is flush-edge design, the probability of blocking the for Image card fan is smaller. The four-layer circuit board, with an isolation layer in the middle, has for stronger anti-interference ability. Adopt for Marvell 9215 main control, support 99% operating system. Strong compatibility and stable performance. Specifications: Material:PCB Colour:Black Size of Board:5.6x6.5cm/2.20x2.56inches Length:12cm/4.72inches Note: Please allow 0-3mm errors due to manual measurement, make sure that you do not mind before you order. Package includes: 1 Set IPFS Hard Disk Adapter Card SATAIII