Features: This SFF8643 to 4 bay backplane works with both storage device types, delivering up to 6Gbps per slot for quick and consistent data handling in your storage setup. produced with strong metal housing, SFF8643 connection , and gold plated SAS29P interfaces for long lasting stability in your storage arrangement. Includes two large 4 pin power inputs, safety components, and two 12V cooling fan interfaces, along with a vented layout for improved cooling during extended usage. With 2.8cm standard drive spacing and 1.6mm thick circuit board, this backplane accommodates most drive setups for straightforward installation. Every slot possesses power and activity lights to help check drive conditions and maintain smooth functioning of your storage solution. Specifications: Materials: Metal Size:124x108mm/4.88x4.25inch Package Includes: 1PC SAS\SATA Hard Disk Backplane note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.