https://devzone.nordicsemi.com/f/nordic-q-a/2668/j-link-of-nrf51822-dev-kit-to-program-external-chipHi. I have a custom nRF51822 PCB with SWDCLK and SWDIO Header. I have a nRF51822 Dev Kit. Is there any way to use the J-Link from Dev Kit to Program the Chip of the custom PCB? Thanks. Regards.en-USTelligent Community 13Mon, 02 Jun 2014 08:42:22 GMThttps://devzone.nordicsemi.com/thread/10481?ContentTypeID=1Mon, 02 Jun 2014 08:42:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5748e125-29a3-4691-9f6f-5fc854e67f98FormerMember<p>Yes, the J-Link from the development kit can be used to program the nRF51822/nRF51422 on a custom made board. What you have to do is to make sure that the programmer is connected to SWDCLK, SWDIO, GND, and VCC. One way to do this is to copy the &quot;programming&quot; header from the development kit.</p> <p>This question has also previously been answered in <a href="https://devzone.nordicsemi.com/question/77/can-i-use-the-j-link-lite-to-program-my-custom-board/">this</a> post.</p><div style="clear:both;"></div>