Maybe they are. Where do those inside connections come out to meet the other components required to control the miner, communicate over the network, etc. We only see one face.




This appears to be a "bitburner" board. Notice how it has more components, obviously you need those here too. Maybe they are not on the board, but you still need to connect them from board to board by some kind of connector, that is exposed on the surface of the board.

The question of how the number of pins in their design and the tray in the picture is not answered, and while I am not an expert in the domain, I am not sure "Multi-core 130 nm chip with power consumption of: 2.7 w/Ghash. Each chip runs at 4.7 GH/s @ 12.8W" can be put in that package with those power and performance specs.