The nRF21540 EK consists of hardware, access to software components, reference design files, and documentation.
The nRF21540 EK (PCA63550) comes with three SubMiniature Version A (SMA) connectors.
Figure 1. nRF21540 EK
Hardware files
Schematics, layout, bill of materials, and Gerber files for the nRF21540 EK are available on the product page.