You buy a https://www.spacemit.com/products/keystone/k3 board. A few links:
- https://milkv.io/jupiter2-dev-kit
More here: https://redd.it/1tcrx4o
#--hackrtrackr:GvputZYXWPiFFoYyJdEQSQsmrYJLpm#
[ my public key: https://keybase.io/self; my proof: https://keybase.io/self/sigs/wb2KGPaXzKP1Z0qVz7tbJjxUFqoVqQsypwsabV4tgec ]