Features: PCIe 4X switching function: Support PCIe 4X interfaces to provide data transmission efficiency. Desktop host application: Specially for desktop host computer, easy to install and use. Transmission: PCIe 4X interfaces is used to realize fast data transmission and improve system performances. Strong stability: Stable connection ensures safe and reliable data transmission. Simple installation: Simple and easy-to-use installation method, suitable for different levels of user operation. Specifications: Product model: KT048 Product color: black and silver Product material: metal baffle+environmentally friendly glass fiber material PCIE: card slot power supply and data transmission. Indicators light status: after the power supply is turned on, the indicators light will be turned on for board. Hard disk interface: it is suitable for 2.5inch hard disk Size:Approx.153x120mm/6.02x4.72inch Package Includes: 1Pc Expansion Card note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.