Upgrade your system's connectivity with this high-performance M.2 Key M 4.0 to PCIe 4.0 4X adapter card. This versatile extension solution features a premium 20cm FFC cable that ensures stable, high-speed data transfer for PCIe 4.0 X4 applications. The adapter is engineered with superior materials, including a high-TG PCB board with 1oz copper thickness and gold-plated connectors for exceptional conductivity and reliability. The 180-degree design provides flexible installation options, making it ideal for both laptop and desktop configurations. The adapter enables users to connect PCIe 4.0 4X cards through their system's M.2 4.0 M-Key slot, expanding hardware possibilities. Built with precision, the thick copper layers and quality components work together to maintain signal integrity and prevent system instability. This adapter is perfect for tech enthusiasts and professionals seeking to maximize their system's expansion capabilities while maintaining PCIe 4.0 performance standards.