Dongle USB Extension noise suppression

No, it’s not simply because of the ferrite core. The reason is to move the stick away from USB interference. Also, use a USB2 cable, not USB3.

You can read up on it here Zigbee network optimization: a how-to guide for avoiding radio frequency interference + adding Zigbee Router devices (repeaters/extenders) to get a stable Zigbee network mesh with best possible range and coverage by fully utilizing Zigbee mesh networking