Unlike other S19 series control boards, the Amlogic A113D control board does not have an SD card reader outside or inside the ASIC; Amlogic only supports micro USB. BITMAIN control board type Amlogic for S19ALU, S19pro, S19J, S19jPRO, S19XP, S19jPRO+, S19JXP, and S19jpro aluminum board version miners.