In order to use AirID with your Windows device, a Windows 10 system with a Bluetooth Low Energy 4.0/4.2 support is required.
For workstations without built in Bluetooth Low Energy 4.0/4.2 capabilities, a USB Bluetooth Donlge or the AirID Bridge - an USB Bluetooth connector - MUST be used to provide connectivity.
Since Windows 7 doesn't support the Bluetooth Low Energy standard, a AirID Bridge is required additionally.