1. Determine whether the hardware cannot be recognized or the driver is not installed (Windwos system can check and confirm under ‘Device Manager-Network Adapter/Other Devices’).

2. Prevent the slot from being unrecognizable due to poor contact caused by oxidation (install the network card and plug it in and out two or three times when the power is turned off, and then install it again).

3. Verify that the corresponding installed slot is PCIe protocol, not SATA protocol (since the Mini PCIe slot and Msata slot have the same appearance or are shared, you can check the motherboard's specification sheet or check the motherboard's silk screen. The printed MPCIe is PCIe, the one with MSATA is SATA)