Features: Flexible Expansion: Converts the SFF 8643 to PCIe 4X, supporting the connection of highly performances devices to meet data storage and computings needs. Fast-speed transmission: Adopting PCIe3.0 technology, the SFF 8643 provides a data transfer rate of up to 32Gbps, ensuring fast and stable data exchange. Strong compatibility: Widely compatibles wide ranging of servers and workstations motherboards, suitable for different brands and models of equipment. Stable: High-quality circuit design optimizes signal transmission, reduces interferences and data loss, and ensures stable system operation. Simple installation: no additional driver required, users can easily complete the setting, saving time and effort. Specifications: Item：SFF 8643 to PCIe 4X Adapter Card Size：about 120x90mm/4.72x3.54in Adopting PCIe3.0 technology Package Includes: 1Set SFF 8643 to PCIe 4X Adapter Card note: Due to the problems of lighting effects, there will be certain tolerances in the product, please understand. Please allow 0-2mm error due to manual measurement.