Razer Viper Ultimate was working fine earlier today, and suddenly stopped disconnecting and reconnecting every second, and only happens when connected wirelessly via USB dongle and works perfectly fine wired.

I’ve tested the ff and identified it to be the USB dongle.
• Tried different USB power settings
• Turned off WiFi/Router to isolate any wireless interferences
• Unplugged and powered off wireless devices using 2.4 USB dongles (Keyboard, Controller, Headset)
• Connected directly to PC’s USB port and other ports available
• Tried different PC and laptop (one has lower version of synapse, other has no synapse installed)
• It can’t be a synapse software, as it has the latest software updated over a month ago

Have tried above actions but no luck, and the obvious one is that even when the mouse is powered-off, there’s a sound/notification of USB being plugged and unplugged when the Viper Ult USB dongle is just connected, and it stops when I disconnect it. 

Has anyone who experienced the same, tried getting the USB dongle replaced & paired?