@User0001 Hi, thank you very much for posting on TP-Link Community. 1. When the issue happens, the random client device will disconnect from the WiFi network, other client devices are still working...

@Stephen_M Hi, if you connect the USB hard drive to your computer directly and monitor for one or two days, will it have similar issues? Besides, it seems that you are not using the latest firmware,...

@PeterB_bne Hi, is your Archer C4000 EU version or US version? you could check it on the bottom label. Besides, there are new firmware available for both US version and also EU version, and you could...

@Bingee Hi, please reset the device to factory defaults by holding reset button, then refer to this guide to configure it as Hotspot router mode: How to configure TL-WR902AC as Hotspot Router

@Sardonyx Hi, how do you check the WAN and LAN ports negotiation speed on the Archer C2 V1 router? And is the version on your router bottom label EU version or any other versions? Upon checking, your...

@3380 Please provide more details if you have any question on TP-Link product.