A:AnswerDepending on the OS, this adapter supports Windows 8.1/10, Linux. Please review the specs here: https://www.asus.com/us/Networking-IoT-Servers/Adapters/All-series/USB-BT500/techspec/
A:AnswerMost car stereo will not support a Bluetooth adapter, please check with the car manufacturer if it meets the system requirements of the Bluetooth device.
A:AnswerYes it will. The AirPods would connect through Bluetooth rather than the H1 chip. So, the features may not all be there but you’ll get the standard Bluetooth features. As long as your MacBook has a usb-A port