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A3: Move the network card away from interference sources and obstacles. Wipe USB interface and network card surface with a dry cloth to remove dust. Update network card driver and router firmware. Disconnect unnecessary devices connected to the router to free up bandwidth.

A2: It works on both, but only one computer at a time (insert USB port and install matching driver). Fully compatible with Win7/Win10/Win11 (32/64-bit); partially compatible with macOS 10.15+ (limited WiFi 6 functions); Linux needs third-party drivers (compatibility varies by distribution). Check COMFAST official website for compatibility before use.