References: 

(1) Nordic nrf52840 Datasheet - Nordic Semi 
https://infocenter.nordicsemi.com/pdf/nRF52840_PS_v1.0.pdf

(2) AliExpress nrf52840 Dongle Catalog 
https://www.aliexpress.com/w/wholesale-nrf52840-dongle.html

(3) AliExpress NRF52840 NRF BLE5.0 dongle with shell - US$15
https://fr.aliexpress.com/item/4000713038926.html?spm=a2g0o.productlist.0.0.41c041f2cq62nb&algo_pvid=b48d728f-c32f-4e7a-bf08-1e37f41ddfec&algo_expid=b48d728f-c32f-4e7a-bf08-1e37f41ddfec-5&btsid=0be3764515839855832523052ec76d&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_

(4) Nordic Semi Infocenter - nrf52180 USB examples (USBD BLE UART Example)
https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v15.2.0%2Fusbd_ble_uart_example.html

(5) Rpi4B nRF52840 BLE Dongle Serial Port Communication Problem - Rpi.stackExchange 202mar12
https://raspberrypi.stackexchange.com/questions/109239/serial-port-communication-between-nrf52840-dongle-and-raspberry-pi-4-using-ble