树莓派的芯片类型及蓝牙版本号列表树莓派集成了蓝牙、wifi和网卡。
Series and generations
Board型号 Bluetooth Chipset蓝牙芯片 Bluetooth Supported蓝牙版本
Raspberry Pi 3 Model A+ Broadcom BCM43438 4.1
Raspberry Pi 3 Model B Broadcom BCM43438 4.1
Raspberry Pi Model 3B+ Cypress CYW43455 4.2
Raspberry Pi 4 Model B Cypress CYW43455 5.0
Raspberry Pi 400 Kit
Raspberry Pi 5
The Raspberry Pi Zero, introduced in 2015
The Raspberry Pi 3 B+, introduced in 2018
The Raspberry Pi 4 B, introduced in 2019
The Raspberry Pi Pico, introduced in 2021
The Raspberry Pi Zero 2 W, introduced in 2021
Raspberry Pi 400 Kit, introduced in 2020
The Raspberry Pi 5, introduced in 2023
Raspberry Pi 400 Kit, introduced in 2020
The Raspberry Pi 5, introduced in 2023
detail:
https://en.wikipedia.org/wiki/Raspberry_Pi#Model_comparisonSo the RPi2 will need a Bluetooth dongle to add the Bluetooth hardware.
The RPi4 will not need a dongle as it has the hardware already