nRF52 SDK examples

[morerook]

I am using the nRF52 DK, in the 12.3 SDK I see two different hex files in the examples, 10040 and 10032, which one should I use?

[Knut Auvor Grythe]

There is usually a sticker on the board. I have an nRF52 Preview DK, and the sticker on the board says "PCA10040". PCA10032 appears to be a dongle bundled with the nRF51 DK, so you probably want PCA10040.