Frame case for Antminer S9 The case frame kit is made of aluminum and is suitable for the case of the BTC miner Antminer S9. Used to fix the hash board and control board, and connect the cooling fan. Used to hold the hash board from external impact, better data transmission with the control board, and mining bitcoin. With the new case, the dust damage to the hash board is less, and it is easier to carry, sell and transport.