Overview PCIe TO M.2 adapter, supports Raspberry Pi Compute Module 4 Adapter for NVMe protocol M.2 SSD, faster reading/writing, improving efficiency Supports base boards with PCI-E×1 / ×4 / ×8 / ×16 socket, supports CM4 Faster reading/writing speed than HDD, greatly boosting drive performance Package Contains PCIe-TO-M.2-A x1 Screws pack x1 For more details you may need to know, pls firstly send me message via , I will then send attached document including User Guide for you, thank you for patience.;D