Features: Fast speed PCIe x16 to 8i adapter board enables seamlessly 8 channel device connection for computer systems with metal construction. Features double 74 pin connectors compliant with PCIe standards, supporting optional SFF 8639 or 8i cables for flexible server/work integration. Ideal for data center technicians, server administrators, and hardware enthusiasts upgrading enterprise storage or GPU acceleration setups. Optimized for high density server backplanes, storage arrays, and PC requiring reliable PCIe signal transmission in 5°C 50°C environment. Engineered with humidity resistant (15% 90%) metal housing and wide storage temperature tolerance ( 25°C to 70°C) for durability performances in demanding IT infrastructure. Specifications: Product model: PE5160-4IL Product Name: PCIExpress x16 to double 8i adapter interfaces type: 2x 8i Supported devices: up to 4 pcle4.0 U.2 NVMe Solid Disks Host bus type: PCle x16 Note：Requires motherboards and to support forks Size:about 146.5×39.4mm/5.76x1.55in Package Includes: 1PC PCIe5.0 x16 to 8i adapter board note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution