Bitmain Antminer control board Amlogic A113D C76 C81 [ 4*square fan pin]

The Bitmain S21 / T21 Control Board (version Ctrl_C76 or Ctrl_C81) with the Amlogic A113D main control chip is designed to replace faulty boards in Antminer S21 and T21 models.

✅ Compatible with S21,T21 and etc miner models
✅ Brand new & original OEM product
✅ Tested for quality before shipment to ensure smooth operation
✅ Ready to install for stable mining performance

👉 This board can replace faulty control boards across  Antminer S21 and T21 models by simply flashing the correct firmware for your machine.

We provide brand new, original OEM S21 / T21 control boards, strictly tested for quality and reliability before shipping.