Features: PCIe USB 3.2 Expansion Board, featuring PCIe to 4Port USB3.2 slot conversion enhances connection. Fast speed USB 3.2 Gen1 port, the expansion board ensures stable and rapid file transfers at a theoretical throughput of up to 500MB/s, 4 USB3.2 Port to expand development board functionality, providing an efficient upgrade for your setups. 5Gbps fast data transmission for creating powerful computer clusters. All four port support USB3.2 Gen1, the theoretical transfer speed can be up to 500MB/s file transfer is stable and fast. Specifications: Type: PCIe to 4Port USB3.2 Slot Adapter Size：about 87x37mm/3.43x1.48in Power: USB 5V2A Package Includes: 1PC PCIe to 4Port USB3.2 Slot Adapter note: Please allow 0-1cm error due to manual measurement. please make sure do not mind before bid. Due to the differences between different monitors, the picture may not reflect the actual color. Thank you!