Features: Uses external SFF-8088 interface to convert to internal Small SFF-8087 interface Second generation provides 6.0Gbps transfer rate for each drive in the array Double port combination for multi-device connectivity Two external SFF8088 interfaces and two internal SFF8087 interfaces; Double port conversion for multi-device connectivity. Two rows of SFF8088-SFF8087 channels are independent of each other and do not interfere with each other Specifications: Interfaces：Uses External SFF-8088 to Small SFF-8087 Transfer Rate：6.0Gbps Size:about 8.8x5.6cm/3.46x2.2in Package Includes: 1Set SFF-8087 to SFF-8088 Adapter Caad note: Due to problem of lighting effect and shooting, there might be tolerances in product, please understand. Please allow 0-1cm error due to the measurement.