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User Guide
3.3 USB dongle
The USB dongle establishes a wireless audio link with the radio module in a headset and is identified as an
audio device in the PC operating system.
The USB dongle is mounted on a 0.8 mm, 4-layer FR4 circuit board, with components on both sides of the
board.
Figure 11. nRD24V1 USB dongle top side
Figure 12. nRD24V1 USB dongle bottom side
1 MCU 3 nRF24L01
2 MCU crystal 4 RF crystal
1 USB MCU 3 ISP connector
2 EE Prom
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