The SolidRun CuBox-i4Pro is the "world's smallest computer". The specifications are Quad core i.MX6 1GHZ processor, 2GB RAM, Gbit ethernet, eSata port, and MicroSD slot.

Kali on Cubox-i4 Pro - User Instructions

If all you want to do is install Kali on your CuBox-i4Pro, follow these instructions:

1. Get a nice fast 8 GB micro SD card.
2. Download the Kali Cubox-i image from our downloads area.
3. Use the dd utility to image this file to your SD device. In our example, we use a MicroSD which is located at /dev/sdb. Change this as needed.

xzcat kali-linux-$version-cuboxi.img.xz | dd of=/dev/sdb bs=4M

This process can take awhile depending on your device speed and image size.

Once the dd operation is complete, boot up the CuBox-i4Pro with the MicroSD plugged in. Log in to Kali, that's it, you're done!

Kali on SolidRun Cubox-i4pro - Developer Instructions

If you are a developer and want to tinker with the Kali CuBox-i4Pro image, including changing the kernel configuration and generally being adventurous, check out the kali-arm-build-scripts repository on GitHub, and follow the README.md file's instructions. The script to use is cubox-i.sh