I've bought a fan to experiment with the NanoPC-T4. The connector is the same as the one shown in the image below: https://www.image-tmart.com/prodimgs_v2/8/8100/5845/81005845/3-Pin-Power-Supply-Interface-8cm-Thin-Type-Power-Fan_800x800.jpg?1507447038 Unfortunately, although already quite small the ...