The TL-WN725N is a legendary budget WiFi adapter, but it has a "split personality" caused by a silent hardware revision.
| Symptom | Likely Cause | Fix | | :--- | :--- | :--- | | Adapter detected but no networks | Wrong driver (V1 driver on V2) | Identify USB ID; install correct driver | | Frequent disconnections | Power management | iwconfig wlan0 power off (Linux) or disable USB selective suspend (Windows) | | Low speed / high latency | Driver uses 802.11b/g fallback | Force 802.11n: iw wlan0 set bitrates legacy-2.4 54 (Linux) | | Compilation error on Linux | Missing kernel headers | sudo apt install linux-headers-$(uname -r) | driver tp link tl-wn725n