Hey, the latest firmware for 940N V6 is 180119 , ensure the current one is up to date. https://www.tp-link.com/en/support/download/tl-wr940n/#Firmware Besides, try to fix channel as channel 1, 6 and...

Referring to the below troubleshooting guidance, seems that there is not much can be done. I think you may need contact their tech support to check the warranty....

From the network topology, it should be working, the devices can access each other in the same network; meanwhile you can try to remove the NAS adapter and connect the HDD to the USB port via the USB...

What is the OS version of your PC? Windows (7/8/10) or Mac? With adapter plugged into the USB port, go to device manager-network adapter to find whether it is been recognized. You can change another...

megabolod wrote Update ( I know it's been a while!): I tried hard resetting, no change. Except 2 devices (so far), others failed to obtain an IP automatically. The devices ( an Android and another...

bandwidth control and QoS are similar. For TP-Link router, bandwidth control means that you can specify the certain maximum speed for each device. While for QoS, you can setup different level or...