https://devzone.nordicsemi.com/f/nordic-q-a/50886/ble-version-nrf51-dkHello, What is the BLE version of the ship NRF51422 (on NRF51 DK) please ? Is it 4.2 protocol ? Regards, Hugo.en-USTelligent Community 13Mon, 12 Aug 2019 12:21:05 GMThttps://devzone.nordicsemi.com/thread/203577?ContentTypeID=1Mon, 12 Aug 2019 12:21:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2720f130-dde1-46b8-b722-eb740a1cd8a3hugo_63<p>Thank you so much Edvin!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/203572?ContentTypeID=1Mon, 12 Aug 2019 12:13:10 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8b56ce36-72b5-41aa-b257-22a5d5524b14Edvin<p>Hello,</p> <p>The BLE version on nRF51 is 4.2, yes.&nbsp;</p> <p>Mainly, this means that it doesn&#39;t have 2MBPS or Coded Phy (high speed or long range). In addition, the softdevice for nRF51 doesn&#39;t support long MTU.</p><div style="clear:both;"></div>