# Wireless Communication Optimization for Multiple Device Usage
This guide explains the equipment configuration and placement for optimizing communication with ContactGlove.
![magnetra-spec](\img\multiuser\bus.jpg)
The dongle consumes an average current of around 300mA. When connecting multiple dongles to a single USB port, use a USB hub with self-power functionality to ensure stable dongle operation.
![magnetra-spec](\img\multiuser\position.jpg)
To avoid interference in communication between dongles, place them at least 30cm apart. If the operation is not stable, try to increase the distance between the dongles as much as possible. Additionally, assign different wireless channels to each dongle (glove) to ensure reliable communication.